Chelsea goalkeeper Thibaut Courtois believes his team sent a message to their rivals with their win over Leicester City without Diego Costa.
Costa is apparently unsettled by an offer from the Chinese Super League, while head coach Antonio Conte said the Spain international was battling a back injury.
Arsene Wenger insists he has no problems with Alexis Sanchez, suggesting the top scorer's passion to play for Arsenal is at odds with that of Diego Costa at Chelsea.
Chile international Sanchez reacted angrily to being substituted after concluding the scoring in the Gunners' 4-0 win at Swansea City on Saturday, but Wenger suggested his Stamford Bridge counterpart Antonio Conte has far greater concerns with his own star striker.
Antonio Conte wants a long career in management as the Chelsea head coach described football as life.
Chelsea head coach Antonio Conte described football as his life as he looks to emulate the long careers of Alex Ferguson and Arsene Wenger.
Chelsea have brought Nathan Ake back from Bournemouth after the defender impressed on loan in the first half of the season.
Nathan Ake has been recalled by Premier League leaders Chelsea from his loan spell at Bournemouth.
Britain Football Soccer - Chelsea v Peterborough United - FA Cup Third Round - Stamford Bridge - 8/1/17 Chelsea's Pedro celebrates scoring their fourth goal Action Images via Reuters / Tony O'Brien Livepic EDITORIAL USE ONLY. No use with unauthorized audio, video, data, fixture lists, club/league logos or "live" services. Online in-match use limited to 45 images, no video emulation. No use in betting, games or single club/league/player publications. Please contact your account representative for further details.
Pedro struck twice and Michy Batshuayi and Willian were also on target as Chelsea secured a routine 4-1 win over Peterborough United in the FA Cup third round, despite John Terry's second-half red card.