Chelsea must consider their 2-2 draw at home to Burnley on Monday as an opportunity missed in their pursuit of Champions League qualification, according to Gianfranco Zola.
The Blues would have moved into third place in the Premier League had they won at Stamford Bridge, but Maurizio Sarri's side were frustrated by the Clarets – whose tactics were branded as "anti-football" by David Luiz.
Tempers were frayed towards the end, with Sarri sent to the stands just prior to the whistle before Antonio Rudiger, who did not feature for Chelsea, seemed to be involved in a touchline fracas with a member of Sean Dyche's coaching staff.