Vicente del Bosque is still not sure Diego Costa is going to recover from his hamstring injury in time to make Spain's World Cup squad.
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Costa was at the Spanish FA's base this week for tests on the muscle tear but left without talking to reporters, and could now be regretting last week's trip to visit a Serbian 'miracle-worker' which led to his false start in Saturday's Champions League final against Real Madrid.
The veteran coach has said he will name his 23-man squad for the tournament on Monday at the latest, which is the FIFA deadline, and had previously intimated he would make his final decision by Friday -- when Spain play Bolivia in a friendly in Seville.
Del Bosque said in AS that there was still time for Costa to recover, but again suggested he would prefer not to take risks with his selection.
"I am not sure that Diego Costa will arrive in time," Del Bosque said. "We have time to think about it, but we are in the hands of the doctors. We must be cautious."
Meanwhile, La Roja's 2010 World Cup final match-winning goalscorer Andres Iniesta thinks that home advantage means Brazil could be seen as favourites for the upcoming tournament.
"The reality is that Brazil have many world championships and are playing at home, so in that sense they have an advantage," Iniesta said in Marca.
Euro 2008 match-winner and Euro 2012 Golden Boot wearer Fernando Torres agrees, but says that the experience gained during Spain's trip to Brazil for last summer's Confederations Cup will be a help.
"Brazil has the advantage of playing at home, which is always an important factor," the Chelsea striker told Marca. "We have the experience of the Confederations Cup, so we will not be surprised by the atmosphere, the climate or the pitches. But there are too many good teams to be able to name a favourite."