One key area Chelsea are likely to strengthen is in defense with the Blues needing quality options in center back, left back and right back positions.
Victor Moses has not been the best option in the right wing back position last season under Antonio Conte, and his back up Davide Zappacosta is yet to acclimatize to English football. At left back, Marcos Alonso has enjoyed a fine run for two years, almost unchallenged but for the arrival of Emerson Palmieri in January.
The other position is center back and Sky Sports report that Chelsea are chasing after Atletico Madrid defender Stefan Savic.
The former Manchester City defender is possibly peaking at this time in his career and after working for three years under Diego Simeone, his defending abilities have been honed. Now, Chelsea and Juventus are after him this summer, as per the report by Sky.
The 27-year old has made 36 appearances for Atletico last season.