Midfielder Tommy Doherty has signed a two-and-a-half-year contract with Wycombe after leaving QPR.
Doherty has previously spent much time on loan at Wycombe
The former Northern Ireland midfielder has impressed during two spells on loan with the Chairboys.
Doherty moved to QPR from Bristol City in 2005 but quickly fell out of favour at Loftus Road.
Wycombe manager Paul Lambert told the club's website: "It's brilliant to finally get the signing done and dusted. Tommy is a talented player."