Liverpool boss Kenny Dalglish has sent his best wishes to Aston Villa rival Gerard Houllier.
The former Reds boss was taken to a Birmingham hospital and his condition is said to be comfortable.
Dalglish told liverpoolfc.tv: "Of course our thoughts are with him. We don't know too much about it and there is no point in us being speculative.
"We wish him well and I'm sure he is in the best possible hands.
"Doc Waller is there, who was the club doctor here when Gerard fell ill in 2001, so he's got a good guy beside him and I'm sure the people there will do everything they can to help.
"We send him our best wishes."
