The 19-year-old, who has been ruled out for the remainder of the season, has been targeted by Juventus as his contract is set to expire in the summer
Pogba's current deal is set to expire in the summer and Juventus have been closely monitoring the midfielder's availability at Old Trafford, although earlier this week, Goal.com revealed the Serie A club had started to lose patience with the 19-year-old and issued him with an ultimatum to decide his future by the end of April.
"We've agreed a deal with his agent," Ferguson told MUTV.
"It's now down to the boy. I must stress, he's going to be a first-team player. There's no doubt about that.
"The boy has great potential and I think he's at the right club. But he has to make that decision."
Pogba has made seven appearances as a substitute this season but has been ruled out for the remainder of the campaign after suffering ankle ligament damage during a reserve team game at Newcastle on Monday.