West Brom has reportedly made a club record £18 million bid for Morgan Schneiderlin, according to Sky Sports sources.
The French midfielder is in his second season at United, having joined in a £24 million deal from Southampton back in the summer of 2015.
There has already been speculation in recent weeks of a possible move, with Everton being the reported destination, but the Midland club has seemingly taken the first step in securing the Frenchman.
Lack of game time causing frustration.
The midfielder has only featured in 32 league games over two seasons at the club, making only three appearances this season.
His last appearance came in the 1-1 draw against Arsenal back in November. Having signed Pogba in the summer, and with Herrera and Michael Carrick forming an encouraging partnership, Schneiderlin has seen his chances limited this season.
Speaking for Sky Sports News HQ, Mourinho admitted feeling uncomfortable for failing to give many players in the squad a chance. "I still have bad feelings towards myself as I didn't give a real chance to everyone," the Portuguese coach said. "There are some positions in our sport where we have over-booking."\
With United's squad fully equipped in midfield - currently, five possible options that share Schneiderlin's position - it is likely that the Frenchman will look to play regularly elsewhere.
Business for United in January?
Memphis Depay and Bastian Schweinsteiger are also two other names looking to leave this January, with Depay being given little chance and Schweinsteiger frozen out of the first team. Ashley Young is another name that has been named to leave United, with Watford, Everton, Swansea, West Brom, Burnley and Hull all potential candidates for the 31-year-old winger - who has only started two games this season.
In terms of incomings, Swedish centre-back Victor Lindelof is reportedly close to a move to Old Trafford from his parent club S.L. Benfica and Atletico striker Antoine Griezmann has been linked as well, after admitting he would be happy to play alongside fellow national teammate Paul Pogba.