Not that this has any direct bearing on what Bush will do in 07, but . . .
There have been 16 other RBs that had 50 receptions in their rookie seasons. As we all know, Bush set a rookie RB record with 88 catches. The guys that did it before averaged 59 receptions as rookie but dropped on average to 42 receptions in their second year. I'm not sure why the trend was for these guys to get fewer catches, but for players that IMO were "regular" starters my guess is that they off-loaded some plays as a receiver for more rushing attempts (although I have nothing at all to really support that).
If I were to guess, I think Bush will see more rushing attempts and fewer receiving targets, but how many receptions he gives up will be the key in PPR leagues. IMO, Deuce stunts Bush's value as that limits his opportunities. The other big question will be how the Saints plan on scoring. They had a 27/19 split of passing to rushing TD last year which was good enough to rank Top 5 in both categories.
As for projecting 2000 total yards and 15+ total TDs, what would Deuce McAllister be getting in this scenario . . . a bird's eye view from the sideline?
All things considered, my early projection for Bush would be:
200-900-6 rushing
60-500-2 receiving
That would equate to roughly 188 fantasy points in 0 PPR leagues and would normally rank in the Top 12-15 RBs. In PPR leagues, that would have ranked him as the #10 RB last year.
I would be interested to see what people are projecting for McAllister as well. Combined last year they had
399-1622-16 with 118-940-2 between them. That's 2562 total yards and 18 total TDs between the two. Does Deuce drop to 1000 total yards and 6 total TDs this year?
Full disclosure: Saints

I can't see any reason whatsoever for Bush's reception numbers to be cut by almost a third (from 88 to 60). Screens and dumpoffs to Reggie were so productive for the Saints last year (particularly at the end of the season) that it would be madness for them to stop utilizing them to the extent they did last year. 60 receptions puts him at less than 4 catches a game, and I simply can't imagine that happening given the way the Saints used Bush last year.
I'll use that most dangerous of statistics, second half splits, to prove my point:
Games 9-16 - 10 90 429 4.8 7 76
52 584 11.2 3 161.3 16.1
Do you really think Reggie will only have 8 more catches in all of next season than he did in the last eight games last year (including game 16 where he barely played)?
I'm going in the opposite direction. I don't see a huge change in the way Deuce and Reggie are utilized, but I do see Reggie improving, and the Saints continuing to make him the centerpiece of the offense.
180 carries, 795 yds, 6 TD
96 catches, 880 yds, 5 TD
I could review the bounty of players that had great Games 9-16 that did worse the following year (or at the very least on par for 16 games to what they did in 8 games. For eamples, see Kevin Jones, Willis McGahee, Julius Jones, Larry Johnson, et al. I had outlined a lot of other guys in a Willis McGahee Player Spotlight from a couple years ago but the page seems to have been taken down. Long story short, rarely do these things play out to the extrapolation of the 8 game stats.As for 96 receptions, only 6 RBs have ever hit 90 in a year. Certainly I have no idea what Bush will get receiving wise, but I would be surprised if he got that many. And teams may also scheme to defend him better.
David, I completely agree about second half splits. I called them "dangerous" for a reason, and you've hit it on the head. I've been burned a couple times in drafts using that logic (William Green several years back comes to mind).That said, I don't think you've provided much support for the notion that Bush will suffer a fairly drastic drop off in receptions. As you noted, running backs who grabbed more than 50 balls in their rookie year (and who averaged 59 catches during that season) dropped off to 42 catches on average the second year. However, Bush absolutely smashed the 59 catches mark, which leads me to believe he's an entirely different type of player than those guys. This is supported by the fact that Bush is only the second RB in NFL history to have 80+ catches in his first year (Earl Cooper had 83 in 1980). In fact, only 4 guys have had 70 or more catches in their first year as a RB (add H. Walker and Terry Kirby). Thus, I'm not sure the historical trends are likely to hold up in his case.
Cooper 83 --> 51Walker 76 --> 60
Kirby 75--> 14 (injured) --> 66
Again, none of that has any direct bearing on Bush, so my projection was a guesstimate on my part. Maybe he will get more. But I would not be shocked if he saw a precipitous dropoff.
Just to continue to flesh out the comparisons to Cooper, Walker, and Kirby:Cooper:
+----------+-----+--------------------------+-------------------------+
| Year TM | G | Att Yards Y/A TD | Rec Yards Y/R TD |
+----------+-----+--------------------------+-------------------------+
| 1980 sfo | 16 | 171 720 4.2 5 | 83 567 6.8 4 |
| 1981 sfo | 16 | 98 330 3.4 1 | 51 477 9.4 0 |
| 1982 sfo | 9 | 24 77 3.2 0 | 19 153 8.1 1 |
| 1983 sfo | 16 | 0 0 0.0 0 | 15 207 13.8 3 |
| 1984 sfo | 16 | 3 13 4.3 0 | 41 459 11.2 4 |
| 1985 sfo | 15 | 2 12 6.0 0 | 4 45 11.2 0 |
| 1986 rai | 5 | 0 0 0.0 0 | 0 0 0.0 0 |
+----------+-----+--------------------------+-------------------------+
| TOTAL | 93 | 298 1152 3.9 6 | 213 1908 9.0 12 |
+----------+-----+--------------------------+-------------------------+
Clearly, Cooper's role in the offense was greatly diminished after year 1 -- his carries were cut nearly in half. Thus, I don't think the comparison is valid, assuming you are willing to agree that Bush's role will remain similar or increase.
Walker:
| Rushing | Receiving |
+----------+-----+--------------------------+-------------------------+
| Year TM | G | Att Yards Y/A TD | Rec Yards Y/R TD |
+----------+-----+--------------------------+-------------------------+
| 1986 dal | 16 | 151 737 4.9 12 | 76 837 11.0 2 |
| 1987 dal | 12 | 209 891 4.3 7 | 60 715 11.9 1 |
| 1988 dal | 16 | 361 1514 4.2 5 | 53 505 9.5 2 |
| 1989 dal | 5 | 81 246 3.0 2 | 22 261 11.9 1 |
| 1989 min | 11 | 169 669 4.0 5 | 18 162 9.0 1 |
| 1990 min | 16 | 184 770 4.2 5 | 35 315 9.0 4 |
| 1991 min | 15 | 198 825 4.2 10 | 33 204 6.2 0 |
| 1992 phi | 16 | 267 1070 4.0 8 | 38 278 7.3 2 |
| 1993 phi | 16 | 174 746 4.3 1 | 75 610 8.1 3 |
| 1994 phi | 16 | 113 528 4.7 5 | 50 500 10.0 2 |
| 1995 nyg | 16 | 31 126 4.1 0 | 31 234 7.5 1 |
| 1996 dal | 16 | 10 83 8.3 1 | 7 89 12.7 0 |
| 1997 dal | 16 | 6 20 3.3 0 | 14 149 10.6 2 |
Walker doesn't support your argument either, as he missed 4 games in 1987. Extrapolate his 60 catches through 12 games over a full season, and he would have had 80 catches, a modest increase from year one.
Finally, Kirby:
| Rushing | Receiving |
+----------+-----+--------------------------+-------------------------+
| Year TM | G | Att Yards Y/A TD | Rec Yards Y/R TD |
+----------+-----+--------------------------+-------------------------+
| 1993 mia | 16 | 119 390 3.3 3 | 75 874 11.7 3 |
| 1994 mia | 4 | 60 233 3.9 2 | 14 154 11.0 0 |
| 1995 mia | 16 | 108 414 3.8 4 | 66 618 9.4 3 |
| 1996 sfo | 14 | 134 559 4.2 3 | 52 439 8.4 1 |
| 1997 sfo | 16 | 125 418 3.3 6 | 23 279 12.1 1 |
| 1998 sfo | 9 | 48 258 5.4 3 | 16 134 8.4 0 |
| 1999 cle | 16 | 130 452 3.5 6 | 58 528 9.1 3 |
| 2000 oak | 1 | 11 51 4.6 0 | 3 19 6.3 0 |
| 2001 oak | 11 | 10 49 4.9 0 | 9 62 6.9 0 |
| 2002 oak | 6 | 16 51 3.2 0 | 17 115 6.8 1 |
+----------+-----+--------------------------+-------------------------+
| TOTAL | 109 | 761 2875 3.8 27 | 333 3222 9.7 12 |
+----------+-----+--------------------------+-------------------------+
Obviously, Kirby was hurt in year 2, so we can't really take much from that. However, in year three, he saw his receptions decline to 66, or a bit over 10%. However, Kirby clearly was not as involved in Miami's offense as Bush was in year one, as evidenced by the fact that he never had more than 119 carries in those two years.
Based on the above, I don't see much historical support for 1) a player ever doing what Bush did in his rookie year, or 2) assuming that Bush will suffer a substantial drop in receptions in year 2.