Chelsea are reportedly considering bringing a new central defender to the club during this summer's transfer window.
The Blues currently sit third in the Premier League table, while they will have the chance to book a spot in the FA Cup final when they face Manchester United in the semi-finals on Sunday.
Frank Lampard's side have had their problems defensively this season, though, conceding 49 times in the Premier League, which is only the 11th-best defensive record in the division.
According to Goal, Chelsea 'are increasingly considering' bringing a new centre-back to Stamford Bridge to boost their squad ahead of the 2020-21 campaign.
The report, meanwhile, claims that neither Antonio Rudiger and Andreas Christensen have been offered new deals by the club, which has placed their futures in doubt.
The London club have already secured deals for Hakim Ziyech and Timo Werner ahead of next season, while they also continue to be linked with Leicester City's Ben Chilwell.