Bangkok Blackcat
Striker
It's an interesting one that...
You could for instance envisage a club saying on it's website and other media 'Our players are strictly forbidden in engaging in any activity outside of officially sanctioned activities organised or approved by the club' - but how would that look? it would reek of 'because we can't trust the buggers' or at least 'because we're a domineering sort of club who wants to control everything'. And even then, it would massively reduce the number of activities the club could send representatives to.
You can add to that by then looking at the repercussions of such a policy... even if the club officially sanctions that a former player / club representative visits a s
A club would never get any players signing for it with those stipulations.