Since he came back from his successful Celta Spell it goes like this.
2014/15-Had some injury problems but weren't really major that kept him out for long periods of time.
2015/16-He playing a lot more due to Neymar getting sick and with the departure of Pedro and the transfer ban. But it all came crashing down after he got annihilated in the CL match vs Roma away by Radja Nainggolan which left him with a torn ACL. He's out for 46 Games, only to suffer more muscle injuries when he got back.
2016/17-He gets a fresh start, but again he suffers from some pesky injuries. But once he finally got back, he became a starter under Lucho in the 3-4-3, as an RW option. However, despite that, it's completely short lived as he ends up suffering from a Meniscal Injury ending his season.
2017-18- Despite reports of him coming back in August, he's still suffering from the Meniscal Injury he picked up Back in April which would later force him to go under the knife again and he wouldn't be fit until December. Despite being fit he was not trusted Valverde much, so he went out on loan to Inter and had a pretty good time there.
2018-19-After Inter decided not to spend the money, Rafinha was torn between staying and leaving. He was close to leaving as he wanted Game time, and Betis at one point was a real option for him only for the move to not happen and he decided to stay. He was in limbo for a bit until he would later gain Valverde's trust, however despite that he would end up Tearing his ACL again, sideling him for the rest of the season.
Only 25 years old but suffered a lot since he came back here due to terrible injuries.