Rangers have also signed former West Bromwich Albion and Stoke City player Jordan Gibson, who is still only 17, after he impressed on trial. The teenager played for amateurs Alvechurch FC in the Midland Premier League, after being on the books of the English Premier League clubs as a schoolboy, and was spotted by Rangers scouts.
He's signed a one-year deal with the Ibrox side and is hoping to impress Warburton.
Gibson said: "It's a bit of a dream, but I have always believed. I was released by West Brom, and then went to Stoke, but those experiences have helped to motivate me.
From todays Glasgow Herald.
This guy could turn out to be another Ashley Williams.