Newcastle United legend Alan Shearer was stunned by the behaviour of Arsenal defender Andre Santos at Manchester United.

Santos requested and accepted Robin van Persie's shirt at halftime of the 2-1 defeat.

Shearer wrote in The Sun: "I couldn't quite believe what I was seeing.

"It would have been interesting to note the reaction had he done that for his last club, Fenerbahce, at half-time against Galatasaray for example.

"He's 29, not a young naïve lad.

"He was absolutely all over the place on Saturday as were the whole Arsenal team in terms of defending."