Chelsea manager Antonio Conte has asked his club to make an offer for Juventus defender Giorgio Chiellini.
The Blues are short in numbers in defence and the Italian made it clear that he is working very hard to find a new defender before the end of the summer transfer window.
The Sun believes that Chelsea are ready to offer at least £25million to secure the services of the 32-year-old.
On Saturday, Conte explained that he would be in trouble if one of his regular defenders suffers an injury.
"If you look now at our squad, we have only five defenders - four that started today and an academy player Ola Aina," he said.
"Ola is very good - he has great potential - but with any young player you must work to put them in the first team. Sure, he has a good future.
"If one defender is injured or banned, then we are in trouble, but the club and me we know this and we are talking every day to improve the squad.
"We know that this market is very difficult. It's crazy. I don't want to buy only to buy. I want to buy the right profile for Chelsea, the right investment for the solution and for the future."