Fletcher returned to action for United in a benefit match against Aberdeen last night.
The Scotland skipper had been out of action since November last year due to a chronic inflammatory bowel condition.
Ferguson told MUTV: “It’s been quiet progress for the boy.
“He joined in training a couple of weeks ago and it’s one of those situations where you say: ‘Let’s see how he does because he has had a really difficult time in the last year’.
“Therefore, I wasn’t really placing too much hope in it but let’s see how he does.
“He’s got to the stage now where he feels he needs a game. I let him join Scotland this week but he wanted a game so I said: ‘Come to Aberdeen and join up afterwards’.
“I’ll give him 20 to 25 minutes.”
