Mauricio Pochettino calls for action in the January transfer window after Chelsea's disappointing 2-0 defeat to Everton on Sunday. Four Blues stars could be on the chopping block as the Argentine coach stated that the club "needs to improve in the next transfer window" .

Noni Madueke, who signed for Chelsea in January, has struggled to get game time under Pochettino. The 21-year-old has only been handed one Premier League start all campaign, despite finishing last season strongly under interim boss Frank Lampard . Armando Broja, who started the game up top against Everton, failed to come up with his