According to AS, the Premier League side want a replacement for the injured Tom Heaton and Reina has been identified as a target.
The former Liverpool keeper is no longer a key starter for AC Milan and a move would be ideal for him.
He has played just once for the Italian giants this season. At Villa, he will be able to play more often.
The 37-year-old is all set to move to Aston Villa according to the report and he has found an agreement with the English club as well.
Currently, his agent is finalising his exit from Milan.