Lisandro Martinez is stepping up his recovery towards a Manchester United return. Manchester United defender Lisandro Martinez is continuing his rehabilitation work to get back to full fitness. The World Cup winner was pictured back at Carrington in late November and he is continuing to work towards a return. The club explained: “Martinez was briefly seen with the group as they emerged out on to the pitches, before going off to conduct some individual work as part of his injury rehabilitation.” Lisandro Martinez feeling upbeatLisandro Martinez is feeling positive, posting a message on his Inst…