Southampton begin search for new manager after departure of Mauricio Pochettino
- Pochettino resigned Saints yesterday to join Spurs
- Already he is being linked with key Southampton players
- Saints' board has begun search for a 'high calibre' replacement
- Wanyama describes the loss as "a big blow"
- Fans dismayed and angry at the manner of Pochettino's exit
- Supporters keen on Murat Yakin as new manager