Stokes was bought from Hibernian on the final day of the transfer window, while Murphy moved to Glasgow from Sunderland in mid-July.

BBC: Daryl Murphy and Anthony Stokes eye Celtic partnership

The Italian indicated that the arrival of Milner will be the club's final signing before the transfer window closes at the end of the month - but defended City's sizeable outlay on new players.

BBC: James Milner completes his transfer to Manchester City

The arrival of the trio on the final day of the transfer window comes after the signing of FC Seoul's Ki Sung-Yong, Thomas Rogne from Stabaek, Brondby's Morten Rasmussen and Jos Hooiveld from AIK Stockholm.

BBC: Celtic sign Fulham's Kamara, Braafheid and Well's Slane