Arsene Wenger sends Calum Chambers out on loan

Chambers was dropped following Arsenal's 4-3 defeat by Liverpool.

Middlesbrough have confirmed the signing of Calum Chambers from Arsenal on a season-long loan.

The promising defender, 21, becomes the latest addition to Aitor Karanka's squad having been dropped following Arsenal's 4-3 defeat by Liverpool in their opening fixture of the season.