Yestino - The Signal · Callum McGregorhttps://yestino.com/entities/callum-mcgregor-004a6cEvery event involving Callum McGregorenCallum McGregor admits Celtic squad still needs strengthening before transfer deadlinehttps://yestino.com/events/callum-mcgregor-admits-celtic-squad-still-needs-strengthenin-c8af48https://yestino.com/events/callum-mcgregor-admits-celtic-squad-still-needs-strengthenin-c8af48Fri, 28 Aug 2026 09:05:00 GMTCallum McGregor has made it clear Celtic still have work to do in the transfer market after a makeshift side finished their Champions League collapse against L… Sources: Yahoo Sports