He had been linked with the Everton job, but was passed on for Carlo Ancelotti.
However, United fans are desperate for the club to make a big statement with their new boss, and have surprisingly been calling for the appointment of Mauricio Pochettino.
Pochettino was sacked by Tottenham earlier this month after a dismal start to the season, but is still considered to be one of the best managers without a job at the moment.
He guided Spurs to the Champions League final and back-to-back top-four finishes, but paid the price in November with the club in 14th spot.
source: express.co.uk