McGinn, 31, scored the final goal of Villa’s thumping win over Liverpool, with a brace from Watkins and a strike from Morgan Rogers earning the win.
Aston Vill have now confirmed qualification for next season’s Champions League, sitting in fourth with 62 points and just one game left to play.
Watkins has been electric since the turn of the year, scoring 16 goals in his 31 games across all competitions.
Speaking to Sky Sports after the game, McGinn was full of praise for the striker, even admitted that he wished Watkins was Scottish.
"I wish he was Scottish. He was obviously disappointed in March but if it gave him a kick up the backside he's certainly responded in the best way,” he said.
“We're so fortunate to have him, what he's done for this club the past few seasons has been incredible. I think he may have just snuck his way on to that plane. Hopefully he can carry that into next week."