Chelsea boss Enzo Maresca said Nicolas Jackson could miss between “six to eight weeks” of action due to a muscular injury.. Jackson was withdrawn early on in the second half during his side’s 2-1 win over West Ham at the start of February.. Speaking on Thursday, Maresca said Jackson will be sidelined until after next month’s international break.. “Nico will be out until the international break and probably available after the international break,” he said (via Sky Sports).. “We knew it was a muscular problem but we didn’t know how important it was because of his reaction. We all thought it was not a big injury, but unfortunately, he had a scan and it will be around six to eight weeks.”. Maresca also confirmed fellow striker Marc Guiu is set to be sidelined for some time with a similar hamstring injury.. However, Romeo Lavia and Benoit Badiashile are nearing a return to full fitness while Wesley Fofana has returned to the group, although he will need “two or three weeks” to be available for the Blues.. Maresca also dismissed rumours of a further Reece James injury setback with the full-back set to be available for selection despite missing Chelsea’s FA Cup defeat at Brighton.