The Gunners captain has been the centre of attention since last summer with the Catalans publicly voicing their interest in the player, but they have yet to make a bid that meets Arsenal’s valuation of the player.
Hill-Wood says that the ball is in their court and if they want to sign the player, they must prove it with a bid.
“They have been messing about for a year-and-a-half now and they have got to make up their minds,” Hill-Wood said in the Daily Star.
“The ball is in their court. They have made one bid of around £26m 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.”