|Full name||William Behan|
|Date of birth||8 August 1911|
|Place of birth||Dublin, Ireland|
|Date of death||11 November 1991(aged 80)|
|* Senior club appearances and goals counted for the domestic league only|
He made his United debut in an English Second Division home game against Bury on 3 March 1934. The following July, he briefly returned to Shelbourne before again returning to Rovers. Over the next two seasons, he won another FAI Cup and a League of Ireland Shield. His last game for the Hoops was on 23 August 1936 in a Shield win over Drumcondra.
Behan subsequently became United's chief scout in the Republic of Ireland and is credited with discovering, among others, Johnny Carey, Liam Whelan, Tony Dunne, Don Givens, Kevin Moran and Paul McGrath. He also served as vice chairman of the Dalkey-based Leinster Senior League team, Dalkey United and it was through this association that he discovered McGrath.
Behan's father, William Sr., was one of the founder members of Shamrock Rovers. His brothers John and Paddy also played for Rovers. His son William junior kept goal for Rovers side also for a spell. His second cousin was Bob Fullam.
Billy's grandson Philip Behan is the former Head of International Football at the Football Association of Ireland and is now a UEFA and FIFA Agent organising friendly international matches and tournaments around the world.
Billy died in November 1991 at the age of 80.
As a player
- Shamrock Rovers
As a manager
- FAI Cup (1): 1954
- McGrath, Paul; Hogan, Vincent (2006), Back From the Brink, Arrow, ISBN 978-0-09-949955-8
- The Boys In Green – The FAI International Story (1997): Sean Ryan
- The Hoops by Paul Doolan and Robert Goggins (ISBN 0-7171-2121-6)