Blackpool striker O'Donovan wants Sunderland stay
"I'm definitely happy, because they're really nice people. It wasn't just Roy (Keane), people like Niall Quinn and Ricky, they are fantastic people," said the Irishman.
"It's a big club, a family club so I don't regret going there one iota. I'd love to do back there, but there is no point making plans because I made plan to come back this year and make it my big year and it didn't happen."