Niall McGinn has yet to make his first-team debut for Celtic since signing from Derry City in January. "I assume there will be a new manager in place by the time I come back," he said.

"It's the board's decision but whoever it is, the players will all be starting from scratch.

"We are meant to report back for training on July 1 but maybe the new manager will change that.

"However, whenever we get back I will hope to make an impression on him.

"We are all out to prove ourselves, especially myself because I came to Celtic late last season.

"It was difficult for me when I first arrived because I had lost six or seven weeks of fitness beforehand.

"So I am looking forward to getting in a full pre-season and I want to be 100% fit to give myself every chance.

"Hopefully, I will get some of the pre-season games and then get some games in the SPL.

"If I do get the opportunity it will be down to me to impress and the rest of the boys will have to do the same."