Liverpool forward Ben Woodburn has received a first call-up to the Wales squad for the World Cup qualifier against the Republic of Ireland on March 24.
"I think technically he's very good and he's performing very well with one of the biggest teams in the world".
"When everyone got excited six months ago, saying, 'You need to take a look at Ben Woodburn.' It made me laugh".
Coleman added that he would allow Dummett the rest because they have Tottenham's Ben Davies and Aston Villa's Neil Taylor, who are able to play left back. "There's no knee-jerk reaction to cap him", he said.
"He's earned this - when I thought about the best squad I can select for this game, he's done enough to get in".
"He's in there on merit - he's playing for Liverpool in the Premier League and every day he is training with global players".
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The Reds then travel to lowly Middlesbrough on Sunday 19 March for a crucial League match in which three points must be earned. United heeded the warning and pressed hard for the opener, with Ibrahimovic heading over from Antonio Valencia's cross.
"But it won't be because of anybody else".
"Ben has been playing for Wales since he was a young boy". He has a good future with us.
Wales lost goalkeeping coach Martyn Margetson to England after reaching the semi-finals of Euro 2016 last summer.
Woodburn has represented Wales at youth level, including playing for the Under-19s this season, and has never given reason to believe that he will switch allegiances.
Real Madrid forward Gareth Bale is set to make his 21st successive competitive worldwide appearance, having not missed a qualifier or tournament game since October 2013. He returned to action in mid-February and has scored twice in five games since but has missed the club's last two league outings through suspension after being sent off against Las Palmas. He's training with worldwide players everyday so it's a small transition and there won't be any problem for him.
"In fairness to Real Madrid they've been fantastic to work with".