Barca have a number of issues to deal with in Ozil’s contract which were put in place by Real Madrid when he joined the north London based outfit.
Real Madrid included an anti-panic clause in the contract of Mesut Ozil when he joined Arsenal on a record £42.5 million transfer in 2013.
The clause prevents Arsenal from being able to sell Ozil to another La Liga club without Real being given first-refusal for 48 hours.
Another aspect of the clause is that the Real would receive 33 percent of any transfer fee above €50 million for the World Cup winner.
The clause is believed to have been included to make it more difficult for Barcelona to sign Ozil in the future.
Arsenal have also agreed to have paid add-ons of €1 million for each time they book a place in the Champions League group stages for six-years.
Ozil is currently on international duty with the Germany national team and is expected to feature against England and Italy.