Liverpool will have further talks with Barcelona over the transfer of Luis Suarez

The Reds were adamant before negotiations began that they would not sell the Uruguay international for less than the value of his confidential buy-out clause, believed to be anywhere between £70 million to £80m.

Opening dialogue appears to have been positive and it is seen as a significant step forward with the club confident a deal can be done in line with their valuation."The talks were productive, with sensible expectations on both sides," an Anfield source told Press Association Sport."Further talks and discussions will take place in due course.

Nothing is finalized as of now."Barcelona have the option of offering Chile forward Alex Sanchez as a makeweight in negotiations and it is understood at this stage discussions are taking place considering both options: a straight money deal and also the option of a player-plus-cash alternative.The latter would seem more likely but that depends on Sanchez, with the suggestion in Spain he is not that keen at this point on a move to England.Suarez is currently banned for four months for biting Italy's Giorgio Chiellini at the World Cup.However, following the 27-year-old striker's apology - in which Barca are suspected to have had a major influence in procuring - the Spaniards have stepped up the charm offensive as they began to lay the foundations for a move.On Tuesday sporting director Andoni Zubizarreta spoke in complimentary tones, suggesting "he has the necessary quality to play for Barca", and the club then followed that up with a request for a meeting with Ayre.While that was taking place Barcelona president Josep Maria Bartomeu dropped more hints that they wanted to make the Uruguayan their major summer signing.Suarez's FIFA suspension from all football related activities means he would not make his debut for Barcelona until the end of October and it was expected they would use that as a negotiating tool but with Liverpool insistently sticking to the high-value buy-out clause inserted in Suarez's new B£200,000-a-week contract he signed in December it appears the Catalans have little room for manoeuvre.