Doyle has been on the bench for all four league games so far

Birmingham City goalkeeper Colin Doyle has had a minor operation on his knee.

The 23-year-old Irishman had a small piece of cartilage removed in the procedure on Monday.

The expected recovery time is two weeks, making Doyle a doubt for Birmingham's next Championship match against Doncaster on 13 September.

If he is unfit, Polish goalkeeper Artur Krysiak will take Doyle's place on the bench after completing his recovery from a dislocated finger.