Dani Osvaldo has been handed a two-week suspension by Southampton following an incident at the club's training ground.
The 28-year-old, a £15million signing from Serie A side Roma, has been sanctioned for what Southampton describe as a breach of conduct.
The incident on Wednesday reportedly involved an altercation with Saints defender Jose Fonte.
A club statement read: "Southampton Football Club has today suspended striker Dani Osvaldo for two weeks, following an incident at the club's Staplewood training ground.
"The club has taken swift and proper action for what it considers a breach of the conduct expected of its players.
"Southampton will be making no further comment on this matter."
The Argentine-born Osvaldo was suspended by his previous club Roma for a similar incident back in 2011 after an altercation with Erik Lamela following a game against Udinese.
The striker was recently banned for three matches and fined £40,000 for his part in a touchline melee in Southampton' s Premier League game away at Newcastle in December.
He has not played for the club since and was reportedly subject of an unsuccessful bid from Inter Milan last week.
Osvaldo has scored three goals in 13 appearances for Southampton this season.