By Sean Walsh Chelsea head coach Mauricio Pochettino believes his side’s lack of intensity out of possession was pivotal in their 2-2 draw with 10-man Burnley on Saturday. Cole Palmer twice put the Blues ahead at Stamford Bridge following Lorenz Assignon’s red card, but the hosts were pegged back by goals from Josh Cullen and then Dara O’Shea. Chelsea registered 33 shots, including 13 on target, and chalked up 4.26 xG but only had a point to show for their efforts. “I’m very disappointed in the way that in the second half we managed or deal with the situation,” Pochettino fumed in his post-mat…