Summary:
Liverpool defender Aly Cissokho is a doubt for the January transfer window, but he could be a key player.

Full article:
By . Simon Jones . Aston Villa have opened discussions with Valencia over left-back Aly Cissokho. Manager Paul Lambert needs re-inforcements after loaning Spaniard Antonio Luna to Hellas Verona and missing out on a loan for Ryan Bertrand who moved to Southampton. Premier League return? Former Liverpool loanee Aly Cissokho is wanted by Aston Villa . Attracting interest: Villa are in talks with Valencia over the £3million-rated left-back . Cissokho performed well while on loan at Liverpool against Villa last season but had too many defensive lapses for Brendan Rodgers to consider making the deal permanent. The 26-year-old made 19 appearances for the Anfield club and has two years left on his contract. He could move for around £3million. If Cissokho signs he would become the fourth player signed by Villa manager Paul Lambert this window, following the arrivals of Joe Cole, Phillipe Senderos and Kieran Richardson. On target: Cissokho scoring against Stoke for the Reds last season . VIDEO Positives heading into new season - Rodgers .