Celtic had been linked with a permanent move for Manchester City winger Patrick Roberts, but their former captain is doubtful about a move.
The tenacious midfielder is a player reborn under Brendan Rodgers at Celtic.
Celtic defender Kieran Tierney is one of the best young players in the Scottish Premiership.
The Northern Irishman is preparing for his first season in charge of the Scottish Premiership side.
Leigh Griffiths reached the 40-goal mark for Celtic last season.
The former Celtic defender believes Leigh Griffiths needs assistance and competition up front next term.
The former Celtic defender says the Rangers signing is bitter that he was not sought after by the Bhoys.
The 30-year-old struggled during the latter part of this past season for the Scottish Premiership side.
The Northern Irishman is preparing for his first season with the Scottish Premiership side.
Tom Boyd says there has not been as much enthusiasm about a new Bhoys manager since O'Neill.