Grady is not a PG. He is more of a scorer. Granted, at this time, they don't know if Mintz is returning. The article that I read still suggested that UK has some questions at PG even with a true freshman and Askew returning. The two UK commits at forward are 6'9", 205, and 6'6", 210. I wouldn't say that is the same as Tshiebwe at 6'9", 260.
I think bto's suggestion that you aren't going to find a high level transfer at PG with Chandler coming is correct. Now, you should be able to find a 2 or combo guard who might play a little point when Chandler sits.