He was recently linked with United's arch-rivals Liverpool and revealed he was 'flattered' by the interest being shown by the Anfield club.
"I have to confirm it's 100% true that Manchester United were following me and were interested in me in January.
"Regarding possibilities, I prefer to stay silent as I did when Celtic signed me. This is a job of my agent.
"If I have the chance I welcome the move with open arms. If that is the case I will thank God and I will take my opportunity."