Now the injury, picked up whilst playing for the England under-20 side, is the latest set back to his Cherries career, although the plus side is he does not need to have surgery.
Speaking to the Daily Echo, boss Eddie Howe said:"Lewis is not going to need surgery, which is a really positive outcome. The specialist believed we could, potentially, get him back within three months.
"The fact he doesn't need surgery is a huge boost to him and us.
"The timescale was around the lines of what we were expecting but we were hoping he wouldn't have to go under the knife because then there are long-term implications with that."