Former Arsenal striker John Hartson has urged his old club to sign goalkeeper Petr Cech from Chelsea.
The 32-year-old has been linked with a move away from Stamford Bridge this summer after losing his position as the club's first-choice goalkeeper to Thibaut Courtois, with Gunners boss Arsene Wenger reportedly interested in him.
Hartson says that while Cech would be a great signing, Chelsea might be reluctant to sell to their London rivals.
"Arsenal have to invest," Hartson told talkSPORT. "Arsene Wenger needs to get the cheque book out again.
"Arsenal's squad is not as strong as Manchester City or Chelsea. They need to go and get the best players out there. Petr Cech is only 32, so he's still got seven, eight or even 10 years left. Goalkeepers can go on forever. He's got great quality.
"We saw the other night at Leicester, he can still make great saves. Arsenal need a goalkeeper but whether Jose Mourinho will sell Cech to one of his biggest rivals next season? I don't know."
Cech joined Chelsea from Rennes in 2004.
