The Saints veteran stopper took a dim view of the Argentine's involvement in an alleged assault, which resulted in a two-week suspension for the controversial former Roma hitman
The Italy international is reported to have kicked and headbutted Fonte - a leading figure in the Saints dressing room - during a heated exchange during training on Thursday.
Fresh from serving a three-match ban from the FA for his part in a touchline fracas against Newcastle in October, the latest incident earnt Osvaldo a two-week ban from the club’s hierarchy, and his time on the south coast could be in jeopardy as he begins to alienate himself with his behaviour.
Davies said as much on Saturday, speaking after his side's FA Cup fourth-round victory over Yeovil.
"Obviously what has happened has happened,” he said
"As a team, as a squad, as a club, we are looking forward and we are every much together. It is something we just want to move on from.”
When asked on the prospect of Osvaldo being welcomed back into the fold after serving his suspension, Davies issued a thinly-veiled warning to his team-mate.
“We are a friendly bunch,” he said. "We have always had a good team spirit and a good changing room.
"That can't change and if anyone doesn't want to be involved in that then they are not welcome.”
Osvaldo is no stranger to controversy, having burst on the back pages during his time at Roma after punching Erik Lamela in the face because his former team-mate failed to pass him the ball.