Vaulks linked with Rangers and Blades
Reports last night said the SPL club and Rotherham's South Yorkshire neighbours are tracking the 24-year-old, who has a year on his contract left to run at the AESSEAL New York Stadium.
Although the claims are as yet unconfirmed, it would be no surprise if Vaulks was on the radar of rival clubs. His ability to play several positions and his form in the Millers' push for the League One play-offs has marked him out as an important player.
Rangers were linked with Vaulks last summer. He played for three years north of the border with Falkirk before joining Rotherham in 2016.