Rooney says he would've liked to have played for Celtic if he had his time again.
Speaking on The Wayne Rooney Show, Rooney stated: "It's well known that I am a Celtic fan, and it's probably one of my regrets not playing for Celtic at some point.
"I am a big Celtic fan.
"I went to Ibrox to watch the Old Firm and Celtic, so I sat in the Celtic end, and they were aware of that.
"So when we went in 2010 they battered me. It was not long after I asked to leave Manchester United, and then I'd signed a new deal, so I was under pressure to perform.
"We got a penalty, and I scored it so ran off celebrating, and it was a real hostile atmosphere.
"It was when I was using Twitter quite a bit as well, and I got hammered on Twitter, so I was expecting it."
