The former Celtic winger had been coaching at his old club since 2017.
Shaun Maloney has left Celtic to join the coaching staff of Belgium's national team.
Celtic confirmed the former Bhoys winger's exit on Friday, with manager Brendan Rodgers and chief executive Peter Lawwell passing on their best wishes.
And while many Celtic fans have echoed those sentiments on Twitter, there are others who were not so kind about Maloney - who had two spells in Glasgow as a player, leaving for Aston Villa and Wigan Athleic respectively.
This is what those from Camp B have had to say.
Not the 1st time he turned his back in the club— Wolfe Of Parkhead (@ParkheadWolfe) September 28, 2018
Thinking the exact same myself m8— Chena (@chenamckenna) September 28, 2018
What a wee rat, in the door 2 mins and he jumps ship to be with daddy Roberto— Chris (@crimbo1888) September 28, 2018
Don’t let him back in— CooncilMcGregor (@fantapants67) September 28, 2018
He walks out on us again— Cjm=Colinjon (@Colinjon_1888) September 28, 2018
Bye bye ya wee fud— scott grant (@scottus1982) September 28, 2018
Don’t let him back.— David (@David201130) September 28, 2018
Maloney reunites with Roberto Martinez, his manager at Wigan, in Belgium, with Thierry Henry also part of the Red Devils' set up.
The Scot takes over from Graeme Jones, the Englishman who left for West Bromwich Albion after this summer's World Cup.
Meanwhile, Celtic have confirmed the current Bhoys winger, James Forrest, has signed a new four-year deal with Brendan Rodgers' side.
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