The teenager actually bumped into the former Scotland and Rangers boss in the corridor where he was told to keep up the good work.
Aluko said: "I just met him there and he said, 'Well played'. He said, 'Keep doing that - it's a good experience for you'.
"I will keep learning. I'm here until the end of the season. I just want to keep playing well for Aberdeen.
"When I go back we will see what happens. If I break into the team so be it but I want to keep playing well here and hopefully that will help my career."