Yeah, but even if Ziege was worth £100m and teams bid £100m, his contract set his value at £5.5m. In Spain players have a buyout clause, such as £35m for the best players, and if someone offers that then that's what they are sold for, not a penny more. This was a similar buyout clause. How could Boro hope to haggle or have an auction when it says in writing the Ziege can leave for £5.5m? Just because LFC found out about the clause, it DOESN'T mean that they approached Ziege and he told them. The clause was known by people in the game, and once LFC found out they only had to offer that amount.
Boro only have themselves to blame for agreeing to such a thing in a contract and then denying it existed, before blaming translators, etc. If you can't even get a player's contract right, what chance do you stand?