Havertz could be in line for a recall against Villa, with Lampard insisting he will ring the changes on Monday.
Taylor sent Kovacic off for Chelsea midway through the second half at Wembley.
The fans may have "bitten your hand off to be in the top four", but would they call this Chelsea season a success?
Kovacic and Willian join rather a long list of Chelsea stars on the sideline.
It's slim pickings, but Mateo Kovacic gets a big thumbs-up...
Frank Lampard thought Mateo Kovacic was good for Chelsea. Nope. Bayern Munich have Liverpool to thank anyway.
Lampard admitted his side were outplayed by Bayern Munich.
Chelsea and Tottenham are about to host a '90s-style throwback. It could be decided by Kovacic or Lo Celso.
Kovacic claims Chelsea are 'playing well' but keep making mistakes.
At the other end of the scale Aston Villa were second to Real Madrid with a balance of -169m euros.
Kovacic is enjoying the "freedom" he is being given under Lampard.
Souness: "I wouldn't want to play against Kante. I'd want to play against them."
The hand gesture is for his two neices, one of whom has Down's syndrome.
And that is to get Mateo Kovacic scoring more goals. Frank Lampard reckons Chelsea have a goal machine.
Including a full-back with better numbers than AWB and Robertson, sort of...
Chelsea have completed the permanent signing of Mateo Kovacic on a five-year deal from Real Madrid.
Chelsea made a gaffe yesterday when they accidentally announced Mateo Kovacic as a permanent signing.
Mateo Kovacic is likely to return to Chelsea on a permanent basis next season, according to reports.
Man United can justify spending £50m on an uncapped Englishman. But twice that on a seasoned international?
Chelsea ‘are having second thoughts’ about a permanent deal to sign Mateo…
Maurizio Sarri has given plenty of thought to who will replace Jorginho when needed. He has two choices.
One Chelsea star has been hooked in every single start. Still, at least he's not Ken Sema...
"I am sure in Chelsea I have found the right club for now I am sure in Chelsea I have found the right club for now."
Who is lowering the bar for Arsenal, Chelsea, Liverpool and Tottenham? Manchester City have no-one...
Liverpool and Chelsea remain unbeaten in the league this term, with both sides showing their credentials.
Chelsea's Mateo Kovacic thinks it's "too early" to talk about his future beyond the end of the season.
That obviously includes Eden Hazard, but also a player who "is running like a Formula One car" for Chelsea.
Ross Barkley might get a reprieve against Arsenal as Mateo Kovacic is not ready to start on Saturday.
'I think it's impossible. Here the market is closed, so we cannot change important players now.'
Marina Granovskaia reckons Kovacic will be a valuable asset for Chelsea. Probably more so for Real...
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