Arsenal hero Martin Keown says his old club needs a busy summer market.
Bernd Leno's future is in doubt, Hector Bellerin looks to be surplus to requirements, David Luiz is set to quit after contract talks stalled and Granit Xhaka reportedly wants to leave.
And Keown wants to see adequate replacements bought in.
He told TalkSPORT: "Well, it's a time for change in terms of the players, personnel.
"One to 11, if you go right through the team, Leno's not signing a new deal by all accounts, Bellerin at right-back is not holding that position down, the two central defenders, you'd say there is uncertainty over who is going to play there.
"[Kieran] Tierney the left-back is probably the only one who is a shoo-in as a defender.
"You run right through the team and it's the young kids really that are the backbone of the team. [Bukayo] Saka, [Emile] Smith Rowe have been outstanding this season.
"I think a minimum of maybe five changes. I think the front players are still good - I'd keep [Alexandre] Lacazette, I like him actually in the club.
"[Pierre-Emerick] Aubameyang's had his problems this season, [Gabriel] Martinelli needs to be used more, maybe on the wing perhaps.
"Then you've got Saka to play, Smith Rowe, make sure they build those careers.
"But they need a base in midfield, [Thomas] Partey needs a partner alongside him, they need to spend there.
"Gabriel [Magalhaes] has been disappointing as a central defender, Luiz is about to leave. So there is huge surgery to be made by the manager."
