Chelsea boss Liam Rosenior after his side's defeat to Arsenal(Image: Marc Atkins)

Liam Rosenior has warned his Chelsea squad that they need to clean up their act - or risk missing out on being selected.

Pedro Neto was shown two quick-fire yellow cards, one for dissent and the other for a cynical foul, in the second half of Chelsea's 2-1 defeat to Arsenal on Sunday evening. Neto's dismissal was the Blues' ninth of the season in all competitions and their second in as many matches.

In the immediate aftermath of the defeat at the Emirates Stadium, Rosenior conceded discipline is a "deep-lying" problem that predates him at the club, but something he and his staff desperately need to address. Less than 24 hours on from the defeat, Rosenior said that he will only pick players who are "showing an improvement" on the discipline front.

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"I think the first thing, you pick players who are showing that improvement," said Rosenior. "I can't afford to go for a season every two or three games...