If I were GM, I wouldn't take just any deal offered but I would trade away Watson if I got an RG3 type deal for him.
I look at this from a capitalistic viewpoint. It takes capital/assets to grow an enterprise - if growth is actually the goal. It's possible that the Texans are just worried about year to year attendance, in which case Watson is about their only sellable asset. But let's assume we're talking about upping win totals.
Using capital to grow your business requires sacrificing the current use of the asset in hopes of increased return.
An NFL team has three main assets - the current roster, draft picks, and cap space. As everyone knows, they don't have picks. But worse, the Texans will be entering the 2021 offseason at over $20 million OVER the salary cap. This is the eighth worst number of any team in the NFL.
So that leaves the current roster. Who, other than Watson, do they have with which they could get anything of significant value in return? Watt is good but breaking down. Their WRs are
maybe tradeable. Other than that...
The conditions on the upcoming draft are conducive to the Texans trading Watson. The teams at the top of the draft need a QB and the star power that Watson would bring AND there are excellent replacement options for the Texans at the draft slots they'd received receive in return. There is, of course, a huge downside in that Jacksonville is in the same division. But when your franchise is near rock bottom, you worry about those things later.
I could go further, but I think the point is made. If one of the top three teams in the draft wanted to offer me multiple picks - and the top three teams have a surplus - (and/or players) I'd be more inclined to take the deal than not.
It would be extremely difficult to get fan buy in. But to me, the Texans will only limp along by keeping Watson - and they'll end up looking like the Detroit Lions of the south; good QB, nothing else.