CALLUM McGregor has signed a new four-year contract with Celtic until the summer of 2021. 

The midfielder first joined the Bhoys as an eight-year-old and played a crucial role in the club's unbeaten Treble-winning campaign last season under Brendan Rodgers.

McGregor was rewarded for his fine form on Thursday with a lengthy new deal at Parkhead.

He told the club's official website: "Celtic has been part of my life for so many years and as I’ve gone through the levels club really has become my home.

"I really wanted to make sure I continued to be part of such a great club and it’s a huge honour to sign this new contract.

“I’ve really enjoyed being part of the first-team in the last couple of years and it really makes my time at Celtic and coming through the ranks, so worthwhile.

"We have a great bunch of lads in the team, some real quality players and we're bringing our fans success, so it was something I just had to stay part of.  

“The gaffer has been great here in the past year and I’m totally focused now on continuing to work with him and the staff to always improve personally as a player and work as a team to bring more and more success to our supporters.” 

The 24-year-old has been in excellent form so far this season, scoring three goals and providing two assists in five Premiership matches.