Solskjaer shouted from his technical area as he willed Rashford to get at the Gunners defender, who is filling in for the injured Kieran Tierney on the left back.
The United boss yelled: ‘Marcus, he cannot defend. He cannot defend. Take him on if you want.’
Ole Gunnar Solskjaer told Marcus Rashford to get at Cedric Soares because he ‘cannot defend’
Cedric is filling in for Kieran Tierney at left back with Rashford playing down the right wing
Arsenal have conceded two goals in the three Premier League games Cedric has played this season.
The 29-year-old usually operates as a right back but Tierney’s injury has seen Mikel Arteta play the Portugal international on the opposite side.
Cedric did not react to Solskjaer’s comments on the touchline.
Solskjaer told Rashford to ‘take him on if you want’ during the first half of the game
The defender had a busy half after being involved in a exchange of words with Bruno Fernandes following a coming together.
The defender was booked for leaving an arm on the United midfielder’s face.
The full back has also played six games in the Europa League with the Gunners conceding five goals.
He featured in Arsenal’s 4-1 Carabao Cup defeat by Manchester City and the 1-0 FA Cup defeat by Southampton.
Arsenal have only lost twice when the defender has started this season.