The Argentina international has started United’s last two games at left-back following injuries to Luke Shaw and Ashley Young.
I haven’t seen any sound defensive attributes there. He is very loose, wild on occasions and I wouldn’t trust him one-on-one occasions
While Rojo made an assist in the Red Devils’s 3-0 win against Everton at Goodison Park on Saturday with a brilliant cross for Ander Herrera, the versatile defender struggled in a 1-1 draw with CSKA Moscow on Wednesday night.
The South American was replaced in the second half of the Champions League stalemate after Louis van Gaal opted to bring on Netherlands international Daley Blind.
Former Republic of Ireland international Cunningham isn’t impressed with Rojo’s performances for the Red Devils.
“I’m not a big fan of Rojo,” Cunningham told Newstalk’s Off The Ball.
“I didn’t see a lot of him in the Russian league. I saw him play for Argentina this summer and I wasn’t bowled over. United threw £16m on the table and I thought they’d seen something I hadn’t. But he hasn’t impressed me.
“I haven’t seen any sound defensive attributes there. He is very loose, wild on occasions and I wouldn’t trust him one-on-one occasions. I look at him and I think maybe he is a squad utility player at best.
“I wouldn’t trust him. I don’t like him at centre-half, the more of him I see at full-back, I just don’t trust him. I don’t think he is a Manchester United player.”
Rojo moved to United from Sporting Lisbon in a £16m deal in 2014 after last summer’s World Cup.
The United defender has made one assist in two Premier League games this term.
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