The former Chelsea star looks to be on his way from the Catalan giants, despite the fact his contract does not run out for another two years, after a season of struggling to maintain a regular first team place.
Barcelona new coach Josep Guardiola says he can leave for a fee "around the £5m mark".
West Ham boss Alan Curbishley is hot favourite for the striker's signiture, but Harry Redknapp wants to take him to Portsmouth.