Premier Sports pundit Michael Stewart has raised his concerns over Aberdeen's midfield, as he suggested the 'legs have gone' for two key squad members.

The Dons have been on a dire winless run in recent months having failed to win any of their last 13 Premiership outings - the most recent defeat coming against St Mirren at Pittodrie.

Jimmy Thelin's men remain fourth in the table, but their astonishing lead over the rest of the pack which they built during an 11-game unbeaten run has been wiped out.

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And after watching the Buddies romp to a 3-0 victory in the Granite City, Stewart has highlighted where it's going wrong and pointed to the Dons' midfield.

Thelin has often selected captain Graeme Shinnie and Sivert Heltne Nilsen in the middle of the park, and he did just that against the Saints.

But Stewart believes the 'legs have gone' for the pair and that an injection of energy is needed if they are to bring the dire winless run to a halt.

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He told the Scottish Football Social Club podcast: "The big concern I’ve got for Aberdeen – and to be honest, I’ve had it for quite a while – I was never sure whether Nilsen was a positive or a negative.

"And more and more so now, him and Shinnie in the middle of the park, they’re gone. The two of them together. They need extra bodies in there.

"Polvara, unfortunately, is out injured again. But Palaversa, really good football player, but you’re trying to find the right balance and combination in the middle of the park.

"And I’ll be honest, I don’t think Nilsen is what I’m wanting in there – I think they need something else.

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"He’s [Shinnie] getting to a stage in his career where his legs are not what they’re used to being. I’m meaning the combination of those two together, I don’t think that’s a great combination.

"When you see that second goal that we’re talking about, not only are the full-backs high, but the distance between the centre-halves and the two central midfielders is ginormous! It’s about 40 or 50 yards of a gap.

"You can’t allow your team to be that disjointed and to a degree, the energy in the middle of the park has dropped massively and you need to reinvigorate that somehow."