Keane could be in line to make his first start for the club as he returns to the stadium at which he started his career back in 1997.
"We know Robbie is only here for a short space of time and it is about assessing his fitness and getting him into the right formula in the team. Players have been doing well in the team and it's not as easy as saying 'right you are out - Robbie is in'," said McLeish.
"You can only pick 11 players but, of course, we are considering Robbie. He has trained well the last couple of weeks. We will definitely look to see Robbie involved tomorrow and maybe for much longer than he was last week.
"I'm sure the Wolves fans will give him a good welcome. He did very well there, he was a hero there so we hope he can be a hero for Villa tomorrow."
Keane, 31, is currently on loan at Villa Park from MLS side Los Angeles Galaxy.