Kevin McDonald has left Sheffield United after agreeing terms with Wolves.
The midfielder was granted permission to speak to the Black Country club after they bid an undisclosed fee to trigger a clause in his contract.
After days of talks, the Scotsman has opted to further his career at Molineux.
Blades boss David Weir commented: "We offered him a new, which in my opinion is a very good offer, I have spoken to him personally, as have the club. We made a big effort to keep Kevin, but he has chosen to move on and that is his decision."
McDonald, 24, made 91 appearances for the Blades, scoring a total of five goals, after signing as a free agent in the summer. He scored the first goal of United's campaign, again Notts County, but last season only managed one goal.