Former Arsenal midfielder Paul Merson insists the Gunners desperately need a "world class" goalkeeper if they are to fight for the Premier League title next season.
Colombia's David Ospina impressed after taking over from Wojciech Szczesny at the start of the year but the 47-year-old believes boss Arsene Wenger has to add a new goalkeeper to the squad as well as three more players in all areas of the pitch.
"I think they need a world class goalkeeper. I can't remember the goalkeeper ever saving them points this season," Merson told Sky Sports.
"I think they need a world-class centre-half, a holding midfielder and a world-class centre-forward.
"That is the whole spine of the team. Even with the tight games, like [the 0-0 draw with] Sunderland, it was Sunderland that had the best chances in the game. You rarely see Chelsea have a situation like that."
Two weeks ago, Merson wrote: "They definitely need a new goalkeeper.
"If you look at their two goalkeepers, when have they saved them points over the course of the season? I can't remember many times.
"Look at how many points David de Gea has saved for Manchester United, and Thibaut Courtois for Chelsea. They soon mount up the points."