Ruben Dias (Benfica)

Lampard was willing to let David Luiz join Arsenal on transfer deadline day last summer, confident in the abilities of Andreas Christensen or Kurt Zouma to take over in central defence.

However, a serious injury to Antonio Rudiger has exposed the duo’s frailties and it has been youngster Tomori who has steadied the ship in recent weeks.

The 21-year-old is an excellent long-term option for Chelsea but the Blues will almost certainly look to strengthen in defence, with Ruben Dias reportedly the subject of intense scouting.

Both Manchester clubs have also shown interest in the 22-year-old so they will have to act fast, while Inter Milan defender Milan Skriniar has been touted as another potential target.