John Obi Mikel has insisted that Chelsea need to improve in one critical area to have any hopes of securing silverware this season.
After claiming European silverware and securing a Champions League place in his first season at the helm at Stamford Bridge Enzo Maresca has wasted little time in looking to strengthen his squad this summer.
New arrivals, including the likes of Liam Delap, Joao Pedro and Jamie Gittens will provide the club with yet more attacking options heading into the coming campaign.
However, according Mikel, who won two Premier League titles during his 11-year spell in west London, the Blues will never return to the pinnacle of football without bringing in a world class goalkeeper.