Liverpool have signed a number of players from Southampton over the past few seasons.
The Brazilian forward is set to join up with Pep Guardiola's Manchester City squad this January.
The Hammers dug in versus Manchester United on Sunday to earn a deserved point at Old Trafford.
The striker could lose his place at Liverpool to Divock Origi, warns Cascarino.
Newcastle were beaten in disappointing style as Blackburn Rovers left St James' Park three valuable points.
Tottenham's forgotten summer signing Pau Lopez was in action last night.
West Ham United drew with Manchester United in the Premier League at the weekend.
Could Tottenham Hotspur manager Mauricio Pochettino take charge of Real Madrid or Barcelona in the future?
Liverpool will be without the Brazilian for the next six weeks.
Liverpool manager Jurgen Klopp is reportedly on the radar of Bayern Munich.