Harry Maguire's move to West Ham from Manchester United has stagnated as United look to bring in a replacement first.
United staff had a meeting on Saturday to discuss the Financial Fair Play restrictions around their transfer business.
United were fined £257,000 for a minor breach in July, and have been mindful of what they can push their limits to this window as they remain under scrutiny.
Ultimately, they need to sell to buy, though that hasn't prevented them from teeing up Benjamin Pavard of Bayern Munich - should the Germans agree to sell.