Having risen through the ranks at Celtic, Welsh made his senior debut for the side in the 2019/20 season, but did not make his second appearance for the club until the last campaign.
The 21-year-old established himself as a regular starter for the Bhoys in the second half of last season and has continued that trajectory under Ange Postecoglou this term.
Impressed with Welsh’s rise, former Celtic youth coach Miller, who worked with him during the early stages of his career, has hailed him for breaking into a team of the Hoops’ stature as a centre-back.
Miller, who also worked with the likes of Kieran Tierney and Callum McGregor during his time at Parkhead, cited Welsh’s leadership qualities and aggression as two key reasons behind his success.
“This is Celtic football club we’re talking about and they’ve got this kid who is coming in at centre-back, a tough position for a young player to come in at“, Miller told The Athletic.
“Yet, he’s become a fan favourite.
“It’s the leadership as well, demanding the ball in tight situations, and the aggression he’s showing as well at times has been phenomenal.”
Miller is also of the view that giving Welsh a run of games when there were no fans in stadiums last year helped him establish himself in the Celtic first team.
“I strongly believe that the fact that he was introduced during the pandemic, when there were no fans, helped him enormously“, Miller said.
“He was allowed to make mistakes, and grow up in that environment without the added pressure of fans being in the stadium.”
Welsh will be hopeful of continuing his progress and establish himself as a key player for the Glasgow giants in the years to come.