London: Frank Lampard has accused Ross Barkley of showing a lack of professionalism after the Chelsea midfielder was pictured shirtless in a nightclub during the international break. Barkley has been left out of Chelsea's squad for Wednesday's crucial Champions League Group H clash at Valencia as he continues his return from an ankle injury. But, in his latest off-field incident, the 25-year-old was seen partying topless in Dubai recently, raising more questions about Barkley's judgement just weeks after he was involved in a dispute with a taxi driver after spilling chips in the vehicle during a night out in Liverpool.

Lampard backed Barkley publicly on that occasion, but this time there was a sterner tone to his response when asked about the former Everton star. "There are two separate issues. One is the headlines this week. Ross knows how I felt about the first headline. I backed him then and I still back him now," Lampard said. "But he showed a moment of a lack of professionalism as far as I'm concerned. "It's something he now needs to show all his reactions on the pitch." Although Lampard spoke out in support of Barkley following the taxi row, he still dropped Barkley for the following Champions League trip to Lille.