Harlequins Rugby League are searching for a new chief executive after Paul Brown quit due to ill health.
Brown was part of the team, along with chairman Keith Hogg, who steered Quins into a new era after former owner Ian Lenegan quit to take over at Wigan Warriors last year.
He was also instrumental in helping Quins obtain a three-year Super League license,announced last week, which will guarantee their top flight status until 2012.
However, Brown has been unwell for some time now and resigned his post in order to concentrate fully on regaining his health.
Hogg said: "Paul's health is much more important than anything to do with rugby league,and we wish him all the best with his recovery.
"Everyone associated with Harlequins Rugby League would like to thank him for all the hard work that he has put into the job.
"Paul has played a key role in helping us through the period following Ian Lenagan's move to Wigan, and then ensuring that we submitted a very professional license application. "Until his illness, Paul was also playing a vital role in the signing of play-ers for next season, and he leaves the club in the best position it has been in for some time.He will be missed."
Quins had no Super League game last weekend but return to action on Sunday when they host Bradford Bulls (3pm).