Diego Costa returns to Chelsea training

Diego Costawas back inChelseafirst -team training on Tuesday, a week after an alleged row with manager Antonio Conte following atransfer offer from the Chinese Super League.Costa, 28, missed the weekend win over Leicester City with a back injury and has trained alone for the last two days while the rest of the side enjoyed time off.READ MORE:Five strikers who could replace Costa at ChelseaWatch Sky Sports live with NOW TV. Sign up for a Day or Week Pass now and get a 10% discount.According toSky Sportsthough the striker rejoined his teammates in their afternoon session at Chelsea’s training ground on Tuesdayand was due to have a meeting with Conte as well in regards to their bust-up last week.Costa, who earns £185,000-a-week (viaTelegraph), was speculated to be the subject of a bid from CSL side Tianjin Quanjian with theclub now confirming thatthey have spoken to the 28-year-old’s agent, and want to sign the attacker this month.Diego Costa has scored 14 goals in the Premier League this seasonThe Blues however, are adamant that they won’t sell Costa in January as they push for the Premier League title, although they would consider parting with the Brazilian-born Spaniard in the summer.Chelsea currently sit seven points clear at the top of the table having won 14 of their last 15 league matches.Diego Costa has created 28 chances in the Premier League this seaso