Aston Villa fans are sure to be upset over reports Richard Dunne and James Collins were fit last week.
The Daily Mail says Houllier's position has not been helped by reports that centre halves Collins and Dunne were fit for last Saturday's defeat by Wolves, although neither of them played.
Collins, with Wales for the Euro 2012 qualifier against England on Saturday, said: "There was no question of me being able to play because I wasn't fit enough.
"But I got a good few days' training up there and now have a week here so hopefully the calf stands up to it and I am available now.
"The whole episode wasn't great. It's not something I really want to go into. At the moment, it is good to get away and focus on one thing and that is getting three points for Wales this weekend."
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