Lukaku helps Chelsea lay down marker, Arsenal in trouble and Pogba shines again

Ned Keating is joined by Sam Inkersole and Alex Richards to run the rule over the Premier League's weekend action, including Chelsea's win at Arsenal.<br /><br />Romelu Lukaku marked his second debut for the Blues with the opening goal in their victory at Arsenal, with Reece James also on target.<br /><br />The Gunners, meanwhile, remain without a goal and without a win as the pressure increases on Mikel Arteta.<br /><br />And though Paul Pogba notched another assist, Man Utd were unable to make it two wins in a row as they were held to a 1-1 draw at Southampton.