Leeds United forward Harry Wilson has criticised the extended four-game international break that saw him miss four UEFA Nations League matches through injury, but insists he is now fully fit and raring to go as Wales travel to Oslo to face Norway.

Harry Wilson has voiced his frustration over the extended international break that ruled him out of four UEFA Nations League fixtures, insisting he is now raring to get back to making his mark for Wales.

Wales travel to Oslo this weekend with their hopes of reaching March's quarter-finals still alive, though the threat of relegation to League B continues to loom over Craig Bellamy's side. Wilson sat out the last camp with a hamstring injury, watching helplessly as Wales played four matches, including a notable victory over this Saturday's opponents.

The forward, who has become an increasingly influential figure for Wales, made no secret of his disdain for the lengthy international window — a view shared by manager Craig Bellamy, who argued the format favours larger footballing nations.

"Whoever came up with that four-game window needs sacking honestly," Wilson said, reports Wales Online. "You get an injury a couple of days before that and it rules you out for four games and you should only miss two.

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"I wasn't happy with the timing and the fixture pile-up just all worked out the wrong way really. I'm fully fit [now]. It was just a couple-week injury but like I said, it just happened to fall when we had four games and four great games as well.

"I was absolutely gutted to miss them but I'm fully, fully, fully fit now and I'm ready to go."

Wilson openly acknowledges how difficult it was to watch his team-mates from the sidelines, though he was fortunate enough to have a close friend by his side throughout the ordeal.

"I can't sit still [when I'm watching]. I can't enjoy the games knowing I can't influence them. It's a long way from Leeds and me and Joe Rodon were in for rehab the next day so we weren't able to get down. So yeah we watched on the tele and like I said I'm not a great watcher, especially when I can't affect the game so it's tough.

"It was frustrating. Obviously being injured is always frustrating. You miss a few games and you have to keep up your fitness work in the gym. Then getting back in the team after that when the team is doing well can be tough as well so you've just got to persevere, be patient and just wait for your chances."

Wilson credits fellow Welshman Rodon, who had recently returned from his own injury lay-off, with providing invaluable support during his recovery.

"You'd rather have your mate around to do it," he added. "I know it was at kind of different stages. His was obviously a bigger injury than mine and he was halfway through.

"So I think he had a few more weeks work than me, but I feel like when you've got your mate there to get you through it, especially being a fellow Welshman as well. It was definitely better to be doing the work with him than on my own."

Wilson didn't need to venture far to find friendly faces at Elland Road, as four of his Wales colleagues were already part of the squad when he joined Leeds on a free transfer from Fulham during the summer.

"There is a big gang here," he said. "I feel like that definitely helped me in moving up there, settling into the squad and stuff. To have them boys there definitely helped."

After being absent from Wales' previous six fixtures, Wilson will be eager to return to action, despite having featured in only three Premier League starting line-ups this campaign. Improving that statistic represents another personal target for the 29-year-old, who maintains that his recent fitness setbacks haven't been the primary reason for his sluggish beginning at Leeds.

"I feel like I only ended up missing one game with the international break, so I wasn't able to play against Palace, but I don't think it had a massive effect on that. I just think at the start of the season when I wasn't in the team, the team was doing well.

"I'm an honest player. I understand that. I've been in starting XIs and teams where I'm doing well and I don't want to be dropped. But then, yeah, a bit more recently wins have started to be a little bit more difficult to come by and I've started a few more games.

"I think that's how football is. I'm a player that wants to play every game but ultimately it's the manager's decision and the players who do play have to perform to stay in the team."

Bellamy remains unconcerned about Wilson's limited playing time, suggesting the international break could actually serve as the springboard he needs to revitalise his season at both club and international level.

"He has been outstanding," Bellamy said last week. "But when we first came in, Harry wasn't starting regularly at Fulham either, and international duty acted as a launchpad that kick-started his club form.

"My message is always the same. Work hard, don't sulk, and force your way into your club team. Harry is the ultimate professional in that regard. I have zero doubts he will be ready to make a major impact for us."