Arsenal boss Mikel Arteta admits they will lose senior players this summer.
Arteta admits he's prepared to be ruthless to continue improving the squad.
He said: "They are always tough decisions. Whether it's to recruit, or other decisions.
Some players sometimes don't want to continue with us, some staff members. It's always tough, especially when you have good relationships with those individuals, but we are here to win.
That's the purpose of everybody at the club. We have to win and to win we have to do it in our way and to do that we have to make decisions."