- Mauricio Pochettino has resigned as Saints manager
- He has joined Tottenham Hotspur
- The 42-year-old signs five year deal at White Hart Lane
- Pochettino issues an 'open letter' to Saints fans
- He also takes all his backroom staff with him
- Saints have 'already begun' the hunt for a replacement
Mauricio Pochettino quits Southampton to join Tottenham Hotspur Live news and reaction
