The German stopper has accumulated eight clean sheets in 16 games in the Bundesliga this season, helping surprise package Dortmund to the top of the table with an impressive 11-point lead over second placed Bayer Leverkusen.
Weidenfeller has been offered a new four-year-contract, but he is set to let his contract expire at the end of the season to join Villa, despite the fact that his current club are on course to qualify for the Champions League for the first time since 2003.
If Houllier can pull off the signing of the 30-year-old then it would represent a stellar piece of business after a somewhat turbulent start to his reign at Villa Park, which currently see’s his side languishing in the bottom half of the Premier League table.
The Villa boss is said to see Weidenfeller as the perfect replacement for the ageing Brad Friedel, who will be 40 by the end of the season. Friedel’s American understudy Brad Guzan is still relatively inexperienced in the Premier League, whilst the other two goalkeepers in the squad are youngsters Elliot Parish and Benjamin Siegrist.
Houllier has also set his sights on ending former Celtic star Aiden McGeady’s nightmare spell in Russia, by bringing him to Villa Park in January.
The winger signed for Spartak Moscow for a hefty £12million fee in August, but has failed to settle in the Russian capital and could be available for a knockdown price, with Houllier ready to pounce.
Disclaimer: The views in this article are that of the writer and may not replicate those of the Professional Footballers' Association.