Manchester United are facing a defensive crisis going into their Champions League trip to Serie A outfit Como.

United have only kept one clean sheet in 10 matches and their chances of keeping Como out look likely to be hampered by suspension and injury.

Leny Yoro is definitely out after being sent off in the 2-0 defeat by Atletico Madrid last week.

However, Luke Shaw, Lisandro Martinez and Ayden Heaven were among the players who sat out the open section of Tuesday morning's training session at Carrington.

Shaw and Heaven both missed Sunday's 1-1 draw at Leeds United, while Martinez was replaced at half-time with a thigh problem.

Teenage defenders Dan Armer and Jaydan Kamason joined Michael Carrick's squad on Tuesday.

Midfielder Kobbie Mainoo, who has not featured since the draw with Tottenham on 10 October, and forward Marcus Rashford, who has been managing a hip problem, were also missing, as was striker Benjamin Sesko. Long-term absentees Patrick Dorgu and Manuel Ugarte are definitely out.

United go into the game on the back of an unhappy run of six games without a win - their worst since 2018-19.