Manuel Lanzini has returned to West Ham after a successful operation on his injured knee and is working to return to the action of the first team.
The 25-year-old broke the anterior cruciate ligaments in his right knee during the Argentina stage preparations for the World Cup in Russia and underwent surgery in June.
Since then, he has spent three months in recovery in Barcelona but has returned to London to begin his rehabilitation program with the West Ham medical team.
Richard Collinge, chief of medicine at West Ham, told the club's official website: "We are very happy with Manu and it's great to have him back.
" Now he's at the three-month stage, so I flew to see Manu. and his consultant, Dr. Cugat, during the weekend and the doctor is very happy with his progress after three months.
"Rehab-wise, we have a plan underway and Manu is very disciplined and very motivated and we are moving in the right direction."
On Lanzini's abs West Ham has had a torrid start to the season, losing his four games in the Premier League and scoring just two goals.
Before his return to domestic action against Everton on Sunday, Collinge had good news for boss Manuel Pellegrini about Andy Carroll and Winston Reid.
"Andy Carroll is progressing very well and will start working on the releases this week," Collinge said.
"Winston Reid is on a brace and has eight weeks of lowering his surgery line and making good progress."
"It's going to be a little longer, but it's also progressing."