The midfielder, who is without a club after being released by Manchester City at the beginning of the month, is hoping to impress new manager Mick McCarthy enough to be offered a contract at the Stadium of Light.
Whitley trial begins with Reserves outing
The midfielder, who is without a club after being released by Manchester City at the beginning of the month, is hoping to impress new manager Mick McCarthy enough to be offered a contract at the Stadium of Light.