The Daily Express confirms the the Blades have turned down a £1m offer from Boro and wish to keep the 22 year old at the club. Their has been rumours of him going to Boro for a higher amount and also a move to The Stadium of Light for £2.5m.
But according to the Daily Express he's staying at the Lane. Quinn's last goal for the Blades was a close range goal against the Saints on the final day of the season.
The Irishman has made 24 appearances and scored two goals in the previous season.