Chris Hughton says you can judge Chelsea's strength by the quality of the substitute's bench.
A quick glance at the bench for Tuesday night's Champions League clash at Paris SG sees the likes of Mateja Kezman, Damien Duff, Adrian Mutu and Geremi all waiting in the wings.
It's that strength in depth we come up against at Stamford Bridge in the Premiership on Sunday.
"They are a quality side, no doubts," said Chris. "You've only got to look not only at the team but the bench to see the changes they are capable of making.
"I know Damien well from Ireland and he's a fantastic player who hasn't figured but he'll be one of six of seven international players who not only haven't made the team but haven't made the squad.
"We're not 100 per cent sure of what we'll be up against on Sunday but then again, no-one is.
"Jose Mourinho has tended to keep a tight squad for the games so far so I don't imagine too many changes, especially as they haven't lost a game and their form has been good."