Aberdeen will run the rule over former Hearts defender Krystian Nowak in Sunday’s friendly against Cove Rangers.

The Polish central defender is a free agent after having had his contract with Greek side Panionios cancelled.

Dons boss Derek Mc-Innes is looking for defensive reinforcements ahead of the new campaign and Nowak, who can also play in midfield, has spent the week training with the Dons.

McInnes will run the rule over the 24-year-old in Sunday’s match against the Highland League champions at Balmoral Stadium.

He said: “We’re having a look at Nowak for the next few days and the plan is for him to be involved at Cove on Sunday. We’re quite relaxed about having him here as he knows the club and Scottish football, so we’ll see how it goes.”

Nowak’s opportunity to win a deal at Pittodrie comes as McInnes reveals the extent of the injury list which led to him cancelling his side’s scheduled friendly at Caley Thistle last night.

The Dons announced on Sunday their scheduled friendly at Caledonian Stadium would not take place following the injuries sustained by players in the 2-2 draw at St Johnstone.

Stephen Gleeson continues to be assessed after suffering a knee injury, while Sam Cosgrove was injured in the first half and Chris Forrester missed the game due to a groin injury.

However, the number of injured players extends beyond the three players at the club.

The Dons boss said: “We’ll have a better idea by the end of the week with Gleeson. We’ve ruled him out for Sunday but hopefully we will get some good news on that front.

“Cosgrove and Forrester should both be back training on Friday. Cosgrove has a sore calf after taking a wee kick on Sunday at St Johnstone, while Forrester has been with the physios for the past couple of days but unless there is anything untoward they should both be back with the team on Friday.

“Niall McGinn has a thigh strain while Mikey Devlin and Frank Ross have groin injuries, so we’re down to the bare bones.

“The young lads are away on their pre-season in Spain, too, so we’re a wee bit thin on the ground and that’s why we cancelled the friendly at Inverness.”

While the Dons run the rule over Nowak, one man who will not be moving to Pittodrie is former Ross County striker Alex Schalk. The Dutchman had been linked with a move to the Dons but he joined Swiss club Servette yesterday.

Meanwhile, Dons goalkeeper Danny Rogers has joined St Mirren on a season-long loan.

Rogers, who becomes Saints seventh signing this summer, spent the 2016-17 season on loan at Falkirk in the Championship.

Dons boss McInnes said: “The move to St Mirren will offer Danny a real opportunity to gain Premier League experience, something which will be invaluable for his development.”