Mourinho was desperate to strengthen his backline over the summer with Yerry Mina, Jerome Boateng, Harry Maguire and Diego Godin all on his wish-list.
However, Woodward failed to deliver and the United boss has been frustrated ever since.
It’s likely Manchester United will spend when the transfer window reopens but Woodward will ask Mourinho to sell first, according to the editor of the acclaimed United We Stand magazine Andy Mitten.
Mitten told the Beyond the Pitch podcast: “I think the club would like to give him money in January, because they know it will give a ‘sugar high’ but we’ve all learned that doesn’t really count for anything either.
“Alexis Sanchez came in an he played a piano and it went viral and the figures were really good and the visibility and that’s all great and lots of the fans loved it, and some didn’t.
“But he hasn’t been a good player. His best performance was against Yeovil in the first match.
“Even if Manchester United do get a player in January – I think it would be welcomed, there’s money there – I do know that if he wants to bring in a defender he’s got to sell one of his first because he’s got so many.
“He’s got four established centre-halves, although you’d struggle to use the word established for any of them.
“He needs to get rid of one.
“But the problem they have is the players are so well paid, they can’t (get rid of them) because they’ve signed three or four-year contracts on the type of money you’re not going to get elsewhere.”
Mitten also claimed Woodward sat down for meetings with agents after the Champions League clash with Young Boys last week as he starts to prepare to do business.
“Ed Woodward has been active with agents – he was with agents after the Young Boys game,” Mitten added.
“Pretty prominent players with pretty prominent agents, but it’s very hard to get good players in January.”