Chelsea snapped up £32 million striker Diego Costa this summer and so far it has looked a good buy - bar a couple of problems.
The Spanish international is slightly injury prone while his situation with his international team is certainly not helpful. He has struggled with hamstring and thigh problems throughout his career and he has recently struggled to get himself to full fitness.
Regardless of this fact Spain continue to call him up to international duty - much to the annoyance of Jose Mourinho and Chelsea.
Costa has struggled with his adopted nation, scoring just once since switching allegiance from Brazil, in a recent European Championship qualifier against Luxembourg.
That was a game in which Chelsea expected him to be rested, but with Spain manager Vicente Del Bosque sensing a chance for Costa to get his first goal he decided to play him.
But while Chelsea fans will feel gloomy about his continual international presence, Vicente Del Bosque has in fact fired a warning at the likes of Costa - not to mention Gerard Pique and Iker Casillas. That he will only pick teams based on form and performance.
He told the Spanish press:
"We do not have a 100 percent commitment, not with [Costa] or with anyone else. The games themselves will continue to be our guide. The important thing is we have players who are active. We cannot begin to suddenly prepare a new team. We must go bit by bit. Fortunately we have good material to work with. In different positions there are alternatives."
Clearly Del Bosque is making it clear that the Chelsea striker does not immediately walk into the number 10 role for his nation. The likes of Paco Alcacer, Rodrigo, Munir Haddadi, Alvaro Negredo, Roberto Soldado, Fernando Torres and Fernando Llorente will all still fancy their chances of international football.
Del Bosque knows that - but he wants to make sure Costa does, so he does not let his performances slip when fit.