Liverpool fullback Andrew Robertson has undergone minor surgery.

Sky Sports says Robertson has undergone a minor surgical procedure on his hand after picking up an infection.

The Scotland international defender reported back for pre-season training on Saturday morning but will be temporarily delayed in participating in the usual tests and drills, with the club's medical team continuing to monitor his rehabilitation from the surgery.

Robertson will travel to the United States for the Reds' pre-season tour next week.

In June, Robertson suffered a suspected hamstring injury while on international duty.