"There were so many positives but there is still a big job to do and I have yet to talk to anyone who does not expect Frank to invest some money in the back line," Pat Nevin wrote for the official Chelsea website.
"I reckon our midfield to front area is looking very well-stocked, with maybe one more creative addition to add up there, but the defence is not going to be easy.
"Just about every club you can think of is considering or has just considered adding a dependable centre-back who is good with the ball at his feet. From the Spanish giants of Real and Barca to Manchester United and until last week Manchester City, it seems this is the position causing most concern. I mean, what is going on? Didn’t it used to be finding creative goal-makers and indeed goalscorers that was everyone’s pressing priority in pre-season?
"You just have to look at how much Liverpool paid for Virgil van Dijk and United paid for Harry Maguire to underline that this is precisely where there is a major problem with supply and demand at the very top level. Everyone is searching for the right defenders just now."
According to the latest report from The Athletic, Chelsea consider several options to strengthen their backline, including Declan Rice (West Ham), Jose Gimenez (Atletico), Lewis Dunk (Brighton) and James Tarkowski (Burnley).
