Matic could be on the move after Manchester United manager Jose Mourinho admitted the Blues were interested in signing the Serbian midfielder.
Mourinho is also keen to sign Manchester City’s Jesus Navas, with City keen on the midfielder.
And he wants to sign another centre-back to bolster his defence, with Arsenal looking to sell Per Mertesacker and Chelsea looking to replace the veteran defender.
“It’s the same as for the last two years, we’ve not done anything,” Mourinho said on Thursday.
“We’re not interested in anybody.
We want to sign Matic.
We’re interested in Jesus NavAS.
That’s why we have not done any signings.”
The Blues boss has previously said he is keen to strengthen the centre-half position, but has not given a concrete price tag.
The Serbian has scored 14 goals in 38 appearances this season, having joined Manchester United from Ajax for £24m in the summer of 2014.
However, Mourinho has been reluctant to sell Matic and is willing to wait until the summer to complete the deal, rather than at the start of the campaign.
Matic has scored four goals in his past two games for United, and his performance has seen him named in the FA Cup Team of the Week.
United also face West Brom in the Premier League on Saturday, with Mourinho facing a tough challenge against David Moyes’ side.
Moyes has been under heavy pressure in recent weeks after Manchester City finished fourth in the league and Mourinho has struggled to find a solution.