COLLINGWOOD has parted ways with its second Irish recruit in a week, with second-year international rookie Kevin Dyas leaving the club - and country - on Tuesday.

Dyas, 21, boarded an Ireland-bound plane with fellow former Magpie and countryman Marty Clarke on Tuesday morning after he decided not to seek a full-time contract.

In a mutual decision with the club, Dyas ended his two-year association with the Pies based on a combination of persistent injury concerns and homesickness.

Club chief of football operations Geoff Walsh said both club and player had developed doubts in Dyas' ability to stand up to the rigours of Australian football.

"It was not quite as unexpected as Marty," he told afl.com.au on Tuesday afternoon. "Kevin tore his hamstring off the bone late last season, and had to go through a six-month recovery period.

"He got back pretty well to play most of this season with the VFL, but more so it was the difficulty with his restricted training program.

"I think he had some doubt in his mind, as did our medical people, as to whether he would stand a full, unrestricted pre-season.

"Given where he's at, we all agreed Kevin would have needed to do every possible thing over the summer to get himself into an elite level of fitness.

"There was some doubt whether his training would allow him to do that."

Clarke told the club last week he also wouldn't seek a new deal, and wanted to return to Ireland to pursue a teaching career.

Dyas, who lived with Walsh for the duration of his two-year stay in Australia, was also conflicted by a case of homesickness.

"There's no doubt that was also the case," Walsh said.

"At times, he encountered that, but most of the time, he really enjoyed the experience.

"Coupled with the injury and the frustration that it was not allowing him to complete a full program even when he was back playing, I think brought on those thoughts of homesickness."

Dyas was impressive in his first year at the club, when he played 14 games for the VFL side before he suffered the hamstring injury in July.

This year, he managed 20 games in the reserves, including the Magpies' three finals.

Walsh said it was disappointing to see Dyas return to Ireland after he showed such promise in his early days at the Lexus Centre.

"Unfortunately, he missed a fair bit of footy through the hamstring injury, and that was probably the time where he was in his formative years in terms of development," he said.

"He missed the one-on-one sessions and development lessons that Marty had got into him the year before."

Despite losing their two international acquisitions in the space of a week, Walsh said the Magpies would not be deterred from further investigating the Irish experiment.

"We'll continue to have a network operating for us in Ireland, and if they see players they consider to be prospects, we'll still be positive," he said.

Clarke, Dyas, and retired veteran Anthony Rocca are the only three confirmed changes to the Magpies' list so far.