Manchester United could face an expensive defensive dilemma if Lisandro Martínez leaves Old Trafford without a transfer fee next summer, with Everton centre-back Jarrad Branthwaite reportedly valued at £80 million.
The possibility comes after Martínez publicly criticised United's recruitment following Tuesday's 2-0 Champions League defeat to Atlético Madrid. Although the Argentina international apologised on Thursday, 15 October, uncertainty remains over his future and the club's plans for January.