Diego Costa's recovery will be a timely boost for Mourinho
Diego Costa has at last shaken off his nagging injury problems ahead of a fixture marathon Jose Mourinho knows could take its toll on Chelsea's star turn.
Life at Stamford Bridge has got off to quite the start for the 26-year-old, who has already netted 10 goals for the west Londoners despite battling hamstring and groin issues.
Those complaints led to Costa missing Spain's international fixtures this past fortnight, with that break allowing the former Atletico Madrid striker to make what Mourinho says is a full recovery.
It is a timely boost ahead of Chelsea's run of eight matches in 24 days - the start of what Mourinho calls a "beautiful" period, albeit one which will be a culture shock to Premier League new boy Costa.
"I believe (this period has set him up for the rest of the season), but now we are going to have a period that is new for him," the Blues manager said of the striker, who is one yellow card away from suspension.
"I always think that the Christmas period for players doing it for the first time in their careers is more difficult.
"The English players, or those who have been here for many, many years, are more physically and, especially, more mentally adapted and prepared to cope with that incredible marathon of football we have to face.
"But in these two weeks he has had a little bit of a holiday, but one spent with a Chelsea physio. Even in that small period of holiday he was working many, many hours per day with our physio.
"After that he came back, he keeps going in the right direction and, at this moment, we feel he's free of his old injury."
A fully-fit Costa is a worrying prospect for Chelsea's Premier League rivals and, in particular, today's opponents West Brom.
It is a match the west Londoners head into atop of the standings having accrued 29 points from the first 11 matches - a start only bettered twice in Premier League history.
Such fine form had even led one bookmaker to pay out on the Blues winning the title, although Mourinho scoffed at the suggestion that the title race was all but over.
"No complacency, that's for sure," Mourinho said. "If we lose matches, and I believe we will, it won't be because of complacency. It will be because football is football. You lose points because it's football, because the opponents are better than you, not because of complacency."
Premier League: Stamford Bridge, Today 3pm