Any move could happen sooner rather than later now Pablo Zabaleta has won his appeal for his sending off against Arsenal in City's 0-0 draw at the Emirates Stadium in midweek.
Houllier confirmed: "There has been dialogue (regarding Bridge). It is true we have been talking to them."
Houllier is also being linked with a move for Lyon midfielder Jean Makoun.
He also confirmed West Brom's interest in signing John Carew who is still battling to gain full fitness.
But the three-game ban facing Emile Heskey for his red card against Sunderland means any moves in that direction would also have to be put on hold.
Houllier said: "I know at some stage there were talks with West Brom. I don't know where it will lead to.
"But to me Carew is an Aston Villa player and, as soon as he is available and fit, I will be delighted to have him in the squad and to play."
Source: PA
Source: PA