Bellamy, who was appointed in July, has said he would have selected Allen for his first squad in September had he been fit – but the need for the midfielder has been emphasised by the absence of Ampadu, James and Ramsey.
This is a long-standing issue for Wales, who have lacked depth in central midfield for years, particularly since Euro 2016 squad members such as Joe Ledley, Andy King and Dave Edwards retired.
Ampadu and James are now the first-choice pairing but, with those two unavailable due to injury and suspension respectively, Bellamy’s only recognised central midfielders available to face Montenegro are Allen, his Swansea team-mate Ollie Cooper and Josh Sheehan, who plays for Bolton Wanderers in League One.
“We are light in the number six area, and that’s through all the age groups,” said Bellamy.
“If you gave me a look at squad planning when I first came into this, that’s why attacking I could double up. In one or two areas we don’t quite have [that depth].
“We are a nation that sometimes we have to be creative in what we do and sometimes that adds to your strengths. We’ve seen bigger nations than ours really struggle in that area [midfield].
“It’s a really important area for how we play. We just have to get on with it. I’m looking forward to seeing how one or two others get on in that position. They deserve it.”