Supposedly they fell out 1n 1968 when the then Manager Bill Nicholson had to decide between them who should take over the captaincy from Dave Mackay. Mullery got the job. Venables was arguably the more skilled footballer but Mullery was probably the right choice for captain. Although I doubt...
Mullery and Venables were pretty pally on the sofa, Venables playfully punching Meullery's thigh at one point.
That rather gives the lie to the theory that the underlying reason for the Abion/Palace rivalry started because the two fell out when Billy Nick chose Mullery as Captain of Spurs over...