Arsenal chairman Peter Hill-Wood has told Barcelona to stop "messing about" and put in a reasonable bid to land Cesc Fabregas, threatening to walk away from the negotiations if the current situation continues.
The Catalan club have been heavily linked with the midfielder for the past few seasons, with speculation having intensified this summer.
Both clubs confirmed last week that a move for the midfielder had not progressed, with Gunners boss Arsene Wenger admitting that there had been "no movement".
Hill-Wood told the Daily Star: "They have been messing about for a year and a half now and they have got to make up their minds.
"The ball is in their court. They have made one bid of around £26 (€30m) million and another rather tentative one.
"If they want to buy the player they are going to have to pay the right price - and when you look at what is being paid elsewhere I don't think what we are asking is at all unreasonable."
Hill-Wood has warned that the Gunners could put an end to the transfer saga by breaking off the negotiations, as he said: "We are getting close to calling off the negotiations."