Jose Mourinho has described Arsenal's recent transfer spending as 'surprising'.
The Gunners have spent £100m in transfer fees over the last 12 months, while Chelsea have spent £82m.
"If you add up the amounts the clubs have spent in the last three or four years I think maybe you will find a surprise," Mourinho told The Mirror.
"Get a calculator. That is one of the easiest things to do. It leaves no space for speculation. If you want to be honest, objective and pragmatic it is the easiest job for a manager or a journalist to do.
"They have bought a fantastic goalkeeper and that is a position which is very important in a team. If you put Ozil plus Sanchez, plus Chambers, plus Debuchy you will maybe find a surprise."
Arsenal recently signed Chelsea goalkeeper Petr Cech for a fee of £11m.
