It's been confirmed by LOSC president Gerard Lopez that Pepe will join the Gunners for €80m.
And Chabane told BeinSport: "We have a resale right that I would like to correct that is 10% and not 15% as I read.
"This is part of the sales contract that has been done. We waited for him. We did not expect as much, it's important.
"But that was part of the initial contract."