The French superstar has again been linked with a big-money move to his homeland in the transfer window where Marseille have consistently been linked with him.
There have been some pundits suggesting the Hammers should consider cashing in on a player who is approaching 30 but Bilic is anxious to keep him. He insisted the French midfielder will not lose focus as speculation mounts, saying he is not troubled by rumours.
He told reporters: “We said that he started the season, and we are moving up and forward and we want to keep our best players.”
A goal apiece from James Tomkins and Luka Milivojevic handed Crystal Palace a crucial 2-0 win over Huddersfield at the John Smith's Stadium on Saturday evening.
Manchester United bounced back from their Champions League exit as they beat Brighton 2-0 at Old Trafford on Saturday night to reach the FA Cup semi-finals.
Tottenham reached the FA Cup semi-finals after they cruised to a 3-0 victory over Swansea in their quarter-final clash at the Liberty Stadium on Saturday.
Premier League basement club West Brom squandered the lead as they suffered a 2-1 defeat to Bournemouth at the Vitality Stadium on Saturday.
Chesterfield boss Jack Lester felt his side were unlucky not to claim all three points after their 1-1 draw at Cheltenham.
New Swindon manager Phil Brown revelled in his side's victory at Cambridge in his first game in charge.