By Daniel Davis For Mailonline
Published: 10:02 BST, 17 September 2020 | Updated: 10:20 BST, 17 September 2020
Paul Merson has lambasted Chelsea's decision to allow experienced winger Willian to leave the club and join rivals Arsenal on a free transfer this summer.
The Brazil international's deal expired after an unsavoury contract stand-off brought an end to his seven-year Stamford Bridge spell, and his debut for Arsenal was marked by a hat-trick of assists against Fulham last weekend.
Merson says Chelsea have taken an unnecessary risk by not stopping Willian from walking away - and also insists Frank Lampard is now under pressure to deliver after a remarkable spending spree.
Paul Merson has slammed Chelsea's decision to allow Willian to join Arsenal on a free transfer
The ex-Arsenal man also insists the pressure is on for Frank Lampard to deliver success soon
Chelsea were keen to keep Willian and thrash out an