Wenger, Vilas-Boas & Mourinho didn't play the game at a professional level. Very few people alive remember the careers of Sir Alex Ferguson or Harry Redknapp. David Moyes & Alan Pardew forged modest careers in the 2nd tier.
Being a great ex player will give you a foot in the management door, but you have to start from scratch to forge a reputation as a manager.
Look at Kenny Dalglish, in the late eighties, people wanted to work for him because of Kenny the player. The players of today(apart from video footage) will only know of Kenny the manager.
Players will know of Southampton, hear our ambitions and if they want to sign then that's all we can ask