Liverpool striker Roberto Firmino is likely to sit out over a month of action with a hamstring injury. The 30-year-old Brazilian, who has scored four goals in eight Premier League games this season, picked up the injury in Wednesday’s 2-0 Champions League win over Atletico Madrid.It was a great result for the Reds as they secured qualification for the knockout stage with a classy victory over Diego Simeone’s side – but the win came at a price. Manager Jurgen Klopp said losing the Brazilian was a big blow.”We are talking weeks, still. More than four. I’d consider that a serious injury.”##NAJAVA_MECA_5957888##Midfielder Curtis Jones and defender Joe Gomez have also been ruled out of Sunday’s trip to West Ham. According to Klopp, their condition isn’t quite as bad as Firmino’s.”Curtis is a completely different story to Firmino. He was very unlucky in training – he got a finger that scratched the eye. He is on the way back but we have to see how long exactly. He will be back after the international break, for sure, but in the international break we have to see when he can start doing proper stuff again. And Joey, hopefully after the international break as well.”Fabinho and Thiago Alcantara are set to be in contention for this weekend’s visit to London, however, after both made their returns from injury against Atletico. That’s good news because the Anfield side will need all bodied possible in for the difficult trip to high-flying West Ham.Deal already done? Arsenal have got a deal with Fiorentina to sign one of Europe’s hottest strikersWest Ham boss David Moyes reached the milestone of 1,000 matches in management with Thursday’s Europa League tie at Genk. The Hammers were denied a win in that match and will be desperate to gift their gaffer three points against a quality Liverpool team. Moyes’ career has seen him manage Preston North End, Everton, Manchester United, Real Sociedad, Sunderland and now the Hammers.