Oh this contract bullshit again. There is very, very, very few contracts in life that you sign and don't know what the mechanism is to break it. IMO contracts without release clauses should be banned for this reason.
Liverpool now choose to set whatever arbitrary price they see fit. Now that is fine if they are selling an apartment or a used dishwasher, but an employment contract should be viewed differently. If Liverpool choose to not sell or only sell at an unrealistically high price, that is bound to have an effect on Coutinho. The hawks on here will say he should just buckle down and continue performing for Liverpool but the reality is that missing out on his dream move could be mentally and psychologically devastating. Again, he is not a bar fridge.
Having players being stuck in this weird limbo is neither good for the player or the club. Release clauses ensure that the player has a way out and the club has pre-approved a set fee that would be a fair evaluation of the contract. Furthermore, release clauses should be depreciating in nature (very high in the first year, and becomes less and less over the life of the contract). This will stop your Roses, Coutinhos and VVDs from signing long contracts for no reason other than a pay bump, if they see a move in the near future.
A lot of posters seem to think a transfer involves two parties trading an asset, taking the third party-the player-completely out of the equation.