Blackburn Rovers manager Steve Kean has revealed that defender Chris Samba will have hospital tests after missing the 3-1 win over Fulham through illness.
The 27-year-old, who , reported sick on Friday by text.
"Chris will be at the hospital either tonight or tomorrow morning," said Kean. "Just for tests, because he has complained of severe stomach cramps.
"He texted the doctor to say he was feeling unwell. He is not for sale."
Samba, who signed a contract extension at Ewood Park last year, was quoted in French newspaper L'Equipe this week as saying "I feel it's time to change".
Kean has yet to discuss the matter with Samba but maintains that the Congolese defender will not be leaving Ewood Park.
"It's simple," said Kean. "We had a bid for Chris Samba from one club, we refused the bid and our statement is there for everyone to see. He is not for sale.
"We'll make sure the virus he has is not too serious, that it clears up and he can be available for Everton.
"When I spoke to the press on Thursday, I was told he was meant to have done an article.
"So I'd like to talk to him. It's happened before where he has been misquoted, but then on Friday he texted in sick, so I haven't spoken to him.
"I would rather talk about the lads who were out there, those who put their body on the line for the club and each other.
"Anybody else who is not here, I'd rather not talk about them."
Rovers were reduced to 10 men midway through the first half after Yakubu's high challenge on Danny Murphy, but rallied to win comfortably and leave Kean thrilled with his side's efforts.
"I am delighted for the fans, players, staff and owners," added Kean. "When you go down to 10 men you are thinking it will be tough, especially so early in the match.
"I felt we reorganised well, we were a little bit bold in keeping the shape we did. I felt we showed good discipline and it gave us a platform to go on and get the goals.
"I expected a yellow card to be shown to Yakubu. We know The Yak doesn't have a malicious bone in his body but the referee can only deal with it within the laws of the game. If we think we can appeal we will but if not we will accept it.
"It was tough on him. People who know him throughout his career know he wouldn't intentionally go and do that but we managed to get the result."