SUNDERLAND, ENGLAND - FEBRUARY 20: Sunderland players warm up during a Sunderland Open Training Session at the Stadium of Light on February 20, 2017 in Sunderland, England. (Photo by Ian Horrocks/Sunderland AFC via Getty Images)
SUNDERLAND, ENGLAND - FEBRUARY 20: Sunderland players warm up during a Sunderland Open Training Session at the Stadium of Light on February 20, 2017 in Sunderland, England. (Photo by Ian Horrocks/Sunderland AFC via Getty Images)