Thierry Henry believes Arsenal need to sign four players if they are to challenge for the Premier League title next season.
The Gunners drew 0-0 with Chelsea on Sunday and currently sit 10 points behind Jose Mourinho's side with the season drawing to a close.
Henry believes the Gunners should replicate the recruitment strategy employed by the Blues, with the club' record goalscorer claiming that they need a new "spine" as they look to win their first league title since 2004.
"Arsenal need to buy four players, they need that spine," he told Sky Sports.
"They need a goalkeeper, they still need a centre-back, they still need a holding midfielder and, I'm afraid, they need a top, top-quality striker in order to win this league again.
"The best example for me today was Chelsea. They struggled last year and they were still competing to win the league. They now have [Thibaut] Courtois, [Nemanja] Matic, Cesc [Fabregas] and Diego Costa.
"For me that speaks volumes, and we saw it today. A team didn't and a team did, and Chelsea are about to win the league."
Arsenal signed five players last summer – including Alexis Sanchez and David Ospina – and subsequently recruited Gabriel Paulista in January, and Henry has urged Arsene Wenger to again dip into the club's transfer fund this summer.
"He has to do it," he added.
"If you take the goalkeepers, for example, at Bayern Munch, Chelsea, Manchester United and a lot of other teams. You need that type of player, you need that competitiveness within the group and you need great players.
"In order to win the league that has to happen."