Like a significant number of the Republic of Ireland squad that has convened ahead of the start of the 2022 FIFA World Cup qualification campaign this week, Callum Robinson is light on game-time.

The West Brom forward was a regular for the Baggies earlier in the Premier League season, even bagging a brace against Chelsea in September.

Slaven Bilic was in charge at the time and even after Sam Allardyce replaced the Croatian coach in December, Robinson initially remained a regular under the former England boss.

But since West Brom added to their forward ranks with the January arrival of Mbaye Diagne from Galatasaray and Robert Snodgrass on the wing, Robinson has increasingly found himself out in the cold.

Indeed, he has not been sprung from the bench once in the Premier League since he made an appearance against former club Sheffield United on 2 February.

But far from allowing any frustration to boil over, and having made the Ireland squad regardless, the 15-time cap has been focusing on trying to remain fit enough to make an impact if selected to play some part against Serbia, Luxembourg and Qatar over the coming week and a half.

"Sometimes you're in and sometimes you aren't and I've just made sure that I'm training as hard as I can to make sure I was fit enough to come on this trip and be there for selection but it's just how it goes sometimes in football," says Robinson, adding that there is "no falling out" with Allardyce.

But while he has to bide his time amid his own personal frustration, the form of club and international colleague Dara O'Shea is something he has been able to enjoy at close quarters.

The defender was part of West Brom's promotion push last season and has been a regular starter as he adjusts seamlessly to life in the Premier League, as well as into the senior Ireland ranks.

O'Shea and Robinson celebrating West Brom's promotion to the Premier League

"It's crazy actually because when I joined West Brom on loan last January, Dara literally just got in properly into the first-team. I think he played a cup game against West Ham and he did really well and kept himself in the team for the league games pushing for promotion," Robinson tells RTÉ Sport.

"I didn't see Dara before but since the day I walked in, he was always in the team from there on in and scored some key goals for the promotion push last year and then he's progressed again this year.

"Dara's the sort of player that I knew he'd be able to adapt. You could see even internationally, he played in the last few trips and just fitted in. It's just the way he plays. He's a calm player, confident in himself as well which is good and I can only see him getting better." 

Robinson's own inclusion in the Ireland squad alongside O'Shea is a vote of confidence from Stephen Kenny who values his versatility and ability to play on both flanks and through the middle.

The player himself insists that he has no specific preference: "Anywhere across the three. I think the way the gaffer plays, it's easy enough to play across the three for me and I've played on the left, out on the right and that was in Slovakia where I played on both wings.

Robinson sharing a joke with Stephen Kenny

"And to play up front, he knows that I can do that as well because I've done that at club level. Especially in this team, where he wants to play football, I think it's easy enough for me to settle into all three."

But he has been part of a forward department that, in different combinations, have struggled to find the net from open play at the start of Kenny's tenure. But Robinson says it's not weighing on the Irish forwards' minds.

"You start panicking when you're not getting chances. We are getting some good chances. Obviously, I've missed the last few games through the Covid reasons which was annoying but it's been hard for the gaffer as well," he says, pointing to the number of withdrawals from recent squads due to injuries and other pertinent reasons related to the current global situation.

"It's tough. The team's changing all the time because of all the Covid stuff. We can't help that. I know everyone's having to deal with it but when you have 14-15 players (unavailable) who were picked in the first squad, it's tough so I don't think anyone should be down about (the lack of goals). You know what it's like, one goes in, two go in or we get a win, even if it's off an own goal, but if you get a win, then everyone picks themselves up and we go again."

And the constant enforced changes mean people inside and outside the squad have not seen what Kenny's Ireland is truly capable of according to Robinson as they face into Wednesday's trip to Serbia and the home game against Luxembourg in Dublin on Saturday.

"There's still so much more to come and if everyone can stay fit, I can't see why we can't push on and definitely this trip, these two games, are massive for us."

Follow Serbia v Republic of Ireland via our live blog on RTÉ.ie/sport and RTÉ News app, watch live on RTÉ2 and the RTÉ Player or listen to commentary on RTÉ 2fm's Game On.