Gavi is a young player and in theory, he still has a long career ahead but will his career last long or will it be short, it will depends on many things. Injuries are what no player want to have and sometimes they can not avoid injuries. However, a smart player will try to adapt his own playing style to reduce risk of injuries as much as possible.
well he is good but he is too aggressive and offensive most times, i haven't checked is reaction percentage in Gaming it should be high 
. I'm a Barca Fan and i love to see him playing and winning tackles for us but he would want to minimize his offensive playing as it's giving him frequent injury , even if it's minor injury it will still accumulate into a greater injury which he's experiencing currently 
i just wish him a quick recovery though.