​ Chelsea are believed to be fast closing in on the signings of Monaco midfield enforcer Tiemoue Bakayoko and Juventus wing-back Alex Sandro, the first two arrivals of what is now expected to be a huge summer of investment for the Premier League champions.





Deals for both Bakayoko and Sandro are expected to be completed this week at a combined figure just shy of £100m, with medicals and other formalities seemingly all that must now be sorted.

With Bakayoko to join for £35m, Sandro at £60m will not only become the most expensive player in Chelsea history - surpassing the 2011 club record £50m deal for Fernando Torres - but also the most expensive defender of all time, breaking the £50m record held by David Luiz.





But this is likely just the start for Chelsea, with manager Antonio Conte well aware that his title winning squad needs significant strengthening in order to cope with the additional demands of a return to the Champions League in 2017/18.

Centre-back Virgil van Dijk and striker Romelu Lukaku remain the club's other two key targets.





And assuming Chelsea can land both players on top of Bakayoko and Sandro, the Daily Express believes the club will have spent £240m on the quartet by the time they've finished.

That is because Van Dijk is valued at £60m by Southampton, while Lukaku could cost £80m or more.





An average of £60m per player makes it a huge statement of intent from Chelsea.

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Elsewhere, Chelsea are still being linked with Roma centre-back Kostas Manolas as well. The Greek international, often touted as a Chelsea target in the past, is tipped to join Zenit St Petersburg in Russia, but Italian journalist Emanuele Giulianelli has claimed it's not quite over.





Writing for Tribal Football, he claims that Chelsea will make a last ditch offer of €40m to trump the €30m Zenit bid that has already been accepted. The Russians are still offering more lucrative personal terms, though, and it remains to be seen how it would tie with Chelsea's interest in Van Dijk.