Matty Longstaff admits his short-lived loan to Aberdeen was an "eye-opener," as the Newcastle midfielder gets set to spend the rest of the season at English League Two side Mansfield Town.
Longstaff arrived from Newcastle in the summer with a big reputation having once been one of the brightest prospects for the Tyneside club.
He threatened a major breakthrough when he scored against Manchester United and it was hoped a loan north of the border would help him rediscover his form.
