West Ham's Manuel Lanzini has been ruled out for the entire 2018/19 season, after the full extent of the injury he picked up in preparation for the World Cup was revealed.
According to the Sun, Lanzini could miss up to 15 months, despite initially being told he'd be back within a year, as the situation surrounding his injury is now being described as a "cruciate plus".
It will be taken as a crucial blow to West Ham, who would have been concerned enough when the injury was initially sustained and reported as ruptured ligaments, but now know that they will have to play the entire Premier League season without one of their key players before pre-season training even gets underway.
The Argentine playmaker made 27 Premier League appearances last campaign after overcoming another injury problem, scoring five goals and assisting seven, earning him a spot in Argentina's final 23 man squad before his country announced he would have to withdraw due to an injury sustained in training.
The news could accelerate Manuel Pellegrini's transfer plans, as he will now need to sign a replacement for one of his central players.
Colombia's Juan Quintero had been talked about as a potential alternative to Lanzini, so it's possible we could see that one forced through promptly after he finishes up with his country in Russia.
In addition to a potential replacement for Lanzini, West Ham reportedly have plenty other irons in the fire, including a rumoured swoop for Lazio duo Felipe Anderson and Jordan Lukaku, so the Hammers could be in for a busy few weeks.