Callum McGregor is confident that Celtic will retain all of their key men this summer with a huge season on the agenda at Parkhead.
A number of Ange Postecoglou's top players have been discussed in the transfer rumour mill after a hugely successful season last term. Josip Juranovic has been linked with English giants Manchester United and Chelsea following just one season at Celtic Park. Team-mate Giorgos Giakmoukais is reported to have had some interest from down south while Matt O'Riley has been attracting the eye of Leicester City boss and ex-Hoops man Brendan Rodgers.
Celtic are looking to make it back-to-back titles this term after recapturing the Premiership crown from Rangers last season. That triumph earned direct entry to the Champions League group stages, with the Scottish champions set to mix it at Europe's top table.
