Wycombe goalkeeping coach Martin Brennan has left Adams Park and will take up a position with a Premier League club from July.
Brennan joined Wanderers from Tottenham in November 2008, helping to develop the club's keepers from first-team level right down to the Centre of Excellence.
He has been instrumental in the development of first-team keeper Nikki Bull as well as Steve Arnold, Jason Mooney, Matt Ingram and Charlie Horlock.
"I've really enjoyed my four seasons at the club. I came from Tottenham where I was working with their academy and reserves sides and Wycombe gave me the opportunity to work in a first-team environment, which I'm very thankful for," Brennan told the club's official website. "I've been lucky to work with the keepers I have and I hope I've been able to assist them in their development."
Head of medical and sports science Stuart Ayles and sports therapist Mick Quinn have also left the club.
Manager Gary Waddock said: "I've really enjoyed working with all three of the guys since I joined the club a couple of years ago. I wish them all the best for the future."