Ok so I said it earlier in the thread but there's a lot of emotional takes here so...
If Irving leaves then it's a no brainer to keep Rozier regardless of long term fit.
Irving leaving doesn't give us cap space, it doesn't enable us to build around youth. It just leaves us without an all star point guard. Danny won't blow it up as he wants to compete now so the obvious thing is to retain assets and utilise them in a larger trade later on.
We know that Rozier isn't the best fit, however we also know that he can play on the big stage too. Similarly to how Tatum gets a pass this year, Rozier should also be given one.
It cannot be emotional decisions that run the franchise, it must be objective. If you want to trade for a superstar later down the line (think Beal for example) then we need someone who can be the salary in that trade. Rozier is the perfect candidate on this roster to fill that space.