Manchester United have rejected Sevilla's loan offer for striker Anthony Martial, sources have told ESPN.
Martial has told coach Ralph Rangnik he wants to leave in January, but United have turned down an approach from the Spanish side as they only offered to cover half of his salary.
Sources have told ESPN that the club will only consider offers that cover all of Marshall's salary and include loan fees.
United are happy to keep the 26-year-old if the conditions are not met.
Marshall has returned to full training but was dropped for a 1-1 draw with Newcastle on Monday. He has not made an appearance since the 2–0 win over Villarreal on 23 November.
The France international is under contract at Old Trafford until 2024, with the option of one more year, after signing an extension in 2019.
He has scored 79 goals in 268 appearances for United since joining Monaco in 2015, when Louis van Gaal was manager.
Martial has had limited opportunities this season after the summer arrivals of Cristiano Ronaldo and Jadon Sancho and made only two Premier League debuts.
As a first-choice centre-forward under Ole Gunnar Solskjaer during the 2019–20 campaign, he scored 23 goals, including 17 in the league, but told Rangnik he wanted a new challenge.
"He explained to me that he has been at Manchester United for the past seven years and he thinks it is the right time for a change, to go somewhere else," Rangnik said.
"I think in a way it's understandable, I could follow his ideas, but on the other hand, it's also important to look at the situation at the club.
"We have the COVID-19 times, we have three competitions in which we still have high ambitions and we want to be as successful as we can."