Northampton have made loanee Ben Harding's stay at Sixfields permanent after agreeing terms with Wycombe for an undisclosed fee.
The midfielder joined Aidy Boothroyd's side on New Year's Day in a loan deal until the end of the season, but has now penned an 18-month contact with the Cobblers.
Boothroyd told the club's official website: "I am delighted to secure Ben's signature for 18 months.
"He is just the sort of player and the sort of character we need to take the club forward.
"His performances on loan have been very good, and he has earned the move he has made with the quality of his performances."
Meanwhile, the club have signed 26-year-old goalkeeper Neal Kitson and striker Lewis Wilson on contracts until the end of the season.