The Valencia forward scored four goals at Euro 2008 and could form an all-Spanish frontline at Anfield alongside Fernando Torres.
Red for club and country: Will Villa (centre) be joining Torres (left) and Pepe Reina at Anfield?
'We will try to bring in another striker,' said Benitez.
'Villa is a player we know all about and he is on our list. But maybe it will be difficult.'
News of Liverpool's interest in Villa came as England striker Crouch passed a medical ahead of his £11million transfer to Portsmouth.
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London gets ready for the Diamond Jubilee - in pictures
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EXCLUSIVE: I won't play with Joey Barton, says Adel Taarabt
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Diamond Jubilee: Boat by boat, here is where to watch the Queen's Thames flotilla - VIDEO
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Duchess of Cambridge is pretty in pink at her first Buckingham Palace garden party
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News pictures of the day
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Locked up and banned: The Tube drunk whose vile racist rant was caught on film (video)
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London 2012 Olympics: Raising the bar and the Games haven't even started yet. Price of toasting Team GB is £6 a pint! -
Timebomb ticking in Thames Estuary could put Boris Island plans in jeopardy -
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‘We will form a human barricade to keep missiles off our homes’
Why I think doctors are right to strike 
Family pay tribute to the London man who gave his life to save a five-year-old girl from drowning 
Eton schoolboys fly Games flag on Everest 
Horror on the 5.53! Commuter dragged 200 feet after getting hand trapped on train 
Shrimpy's - review 
The O2
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Rock star
Happy anniversary
Victoria Coren
Summer party
Diamond Jubilee
Glamour Awards
Garden party
First review
Fair-weather goths
Dog save the Queen
