The shoulder surgery probably limits Keita's options in the transfer portal, at least for this year. For all we know, he's still rehabbing.Pitino probably has a good idea what he could get out of the remaining roster and would not have much trouble replacing them with equally talented players except possibly Keita.
He is the biggest gamble but could turn out to be the biggest gain. It is interesting to see as Vegasman 2000 posted what Pitino thinks he could get out of him.
The best thing for him is to probably carry him for a year, and see what he can do. Pitino will certainly press on and off during games, and when it's on, a good shot blocker in the back of it, can be a difference maker.