The Spaniard, who missed several games in December with the issue, returned to the side in January for a brief period before aggravating the injury.
"[Antonio Conte] is the one who bets on me and that's the truth," the 25-year-old told reporters.
"At the end of the day, a great club has given me the opportunity to play as a starter and to grow.
"That is until the physical problems arrived. I was wrong to play with pain. I wasn't okay to play."