Kylian Mbappe is desperate to fully recover from his knee injury before this summer’s World Cup.The French forward is ‘getting twitchy’ over the issue, according to European football journalist Andy Brassell.GettyMbappe’s knee injury has left the forward feeling ‘twitchy’ ahead of the World Cup[/caption]Mbappe is set to miss three to four weeks of action after his latest injury setback.Real Madrid updateHis club didn’t give any idea on how much longer Mbappe would be out for, their update on Monday suggested they’re happy with the rehab program the player is following. “Following the tests conducted on our player Kylian Mbappe by French specialist doctors, under the supervision of Real Madrid’s Medical Services, the diagnosis of a sprain in the left knee and the suitability of the conservative treatment being followed are confirmed. Pending evolution,” a statement on Monday read.The 27-year-old already missed Real Madrid’s Champions League victory against Benfica last week and he will be unavailable for Monday night’s LaLiga clash with Getafe.Meanwhile, the injury could see him miss France’s matches against Brazil and Colombia later this month.Brassell touched on Mbappe’s fitness whilst discussing the title race in Spain on Monday’s Rushden and Brooker.Speaking to talkSPORT ahead of Los Blancos’ match against Getafe, Brassell explained: “They [LaLiga leaders Barcelona] are four points clear ahead of Real Madrid’s game this evening, where they could close the gap to one point if they beat Getafe, who are just up the road.“Getafe are not into stuff that normal football people like, keeping the ball in play and stuff like that. So it won’t be straightforward for Real Madrid.“They’ve got no Kylian Mbappe this evening as well. Gonzalo Garcia is stepping in for him because Mbappe is nursing this knee injury.“And I think he’s getting a little bit twitchy as we get nearer the World Cup. So he really wants to get past it rather than just manage it.”GettyReal Madrid are keen for Mbappe to undergo surgery to solve his injury woes, according to reports in Spain[/caption]It was earlier reported that Real Madrid were keen for Mbappe to undergo surgery on his knee injury, although the statement suggests otherwise.The operation could resolve the reoccurring fitness issue after a similar lay-off at the start of the year.However, having surgery just three months before this summer’s World Cup would be risky for Mbappe in his bid to represent his nation at this summer’s finals.France begin their campaign against Senegal on June 16 at the MetLife Stadium in New Jersey.Didier Deschamps’ side have been drawn in group I alongside the African champions and European rivals Norway.The winner of the play-off involving Bolivia, Suriname and Iraq will complete the four-team group.GettyFrance begin their World Cup campaign against Senegal on June 16[/caption]Mbappe has scored 38 goals in 33 appearances across all competitions for Real Madrid this season.As well as the LaLiga title race, his availability will also be crucial to their hopes of winning a record-extending 16th Champions League.Despite his second leg absence, Real Madrid were able to see off Benfica on aggregate in the knockout play-off round.They have since been drawn to face Manchester City in the last 16 this month.It is unclear whether Mbappe will be fit for either leg of the tie due to his injury concerns.The first leg in the Spanish capital is scheduled for Wednesday, March 11 before the two sides meet again at the Etihad Stadium six days later.