Saints have accused referee Mark Clattenburg of ‘abusing and insulting’ Adam Lallana during the recent 2-1 defeat at Everton.

The club has also requested that Clattenburg does not officiate any of their matches until the investigation is finished.

Clattenburg's alleged insult was directed at Lallana after the referee turned down late penalty appeals for handball at Goodison Park.

Saints manager Mauricio Pochettino has already publicly criticised Clattenburg's performance at Everton (see related link, below right), since when the club has complained about his alleged comments to Lallana by writing to the Professional Game Match Officials Ltd board.