They will slash £55m on Juventus left-back Alex Sandro and then move for £40m-rated Tiemoue Bakayoko from Monaco.
It will prove Chelsea’s intent after watching Manchester United and Manchester City spend lavishly in the opening weeks of the window.
Transfer news and gossip from Monday’s Daily Mirror
Revealed: The staggering deal that Man United hope will bring Ronaldo home.
Liverpool believe they’ve finally made a breakthrough to land No.1 target .
Southampton keen on Spurs’ Kevin Wimmer – but aren’t happy with the asking price.
Josh King wants Bournemouth stay but doesn’t rule out summer switch to Tottenham.
Stoke misfit Imbula on the verge of a return to France as Potters cut their losses.
Transfer news and gossip from other sites and papers
Marco Verratti is desperate to quit Paris Saint Germain to join Barcelona (Gazzetta dello Sport)
Stoke are targeting injury plagued Southampton striker Jay Rodriguez for £15m (Stoke Sentinel)
Crystal Palace are hoping to attract Italian supercoach Alberto Zaccheroni to replace Sam Allardyce (Croydon Advertiser)
Will Antonio Conte win the Champions League at Chelsea?
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