Well, he's tight so he doesn't have much hands that play call vs donk bet + raise.
Let's give him 99, 55, 33, A9s is also possible. JJ-TT if he calls F, he doesn't float on the turn.
Board: 9

3

5

*A
*******Equity*****Win*****Tie
MP2*****4.55%***4.55%***0.00%*{ KdKc }
BU*****95.45%**95.45%***0.00%*{ 99, 55, 33, A9s }
We have to fold on the turn, despite of his stack.