NEW Celtic signing Matt O'Riley has revealed that he made his decision to move to Parkhead from MK Dons off the back of one phone call with manager Ange Postecoglou.

The central midfielder has signed a four-and-a-half year deal in Glasgow's East End to become the club's fifth addition of the January window.

Speaking to the Celtic website, O'Riley admitted that he was blown away by his impression of Postecoglou and was determined to sign for the Premiership side once he had spoken to the Greek-Australian.

"It feels amazing," the 21-year-old said. "It’s the first time taking the stadium in and it’s even better than I thought it would be and, to put it simply, I’m just really happy to be here. It’s a massive club and I’m just really excited to get going.

“There were other options, ones that I thought were the only ones before Celtic, and then Celtic came out of the blue, to be fair.

"I found out quite late, and then I had a phone-call with Ange. He came across really, really well and he was the one who really sold it to me.

“Obviously the club itself is massive, but just speaking to him really sorted it out for me. With the style he plays, and all that surrounds it, and him as a person, as soon as I got off the phone I was ready to come, to be honest.

"[The style of play] another thing that was massive in terms of my decision to come here. I always said that I wouldn’t just join a club if they paid me a certain amount of money if the style wasn’t right. I’m not that kind of guy. The style is right here and, again, that’s one of the main reasons why I’ve come.

"Ange said to me on the phone that, of course, we want to win – the expectation is to win – but win the right way, win by playing proper football and that’s what I came here to do.

“The big stage is what I want as a player and that’s one of the main reasons I’ve come here – the fanbase, the size of the club.

“I mean, 40,000 sounds like a lot to me, so the fact that it’s close to 60,000 people here is pretty incredible and it’s something I’m really excited about.”

Having progressed through the youth ranks at Fulham, O'Riley has crossed paths with former Celtic players Stefan Johansen, Patrick Roberts and Peter Grant.

“Peter Grant coached me during my time at Fulham in the Under-23s,” O’Riley added. “He’s a really nice guy and he helped me develop during my time at Fulham.

“Pat [Patrick Roberts] I went to school with. He’s a little bit older than me so we didn’t speak much but at the time he was someone I looked up to at Fulham. He was doing really well at the time, so that’s another one for the storybooks.

“I got to know Stef too, so I’m good mates with all of them, but it just shows you that a club like Celtic can attract players like Stef and Pat, and Peter of course, and it’s nice to just follow the same route as such.”