SUNDERLAND youngster Liam Marrs has extended his youth loan with Boston United until January 31.

The 20-year-old defender has made 11 appearances for the Pilgrims since moving to York Street in November, picking up three man-of-the-match awards.

Cramlington-born Marrs has been at Sunderland since the age of 12 and has made eight appearances for the development squad this season, creating four assists.