Former Newcastle United defender Stuart Pearce has questioned their deal for Real Sociedad striker Alexander Isak.

The Swede is joining Newcastle in a £60m deal.

Pearce told talkSPORT: "I have seen a lot of Isak when I looked at potential targets.

"He has been okay, he is good-natured.

"For that money, I'm not sure. I have to be convinced of that."

Pearce left West Ham as assistant manager this summer.