Sevilla are keen on signing Andreas Christensen as part of the deal that could see Jules Kounde join Chelsea this summer.
The Blues have identified Kounde as their main transfer target, and they are exploring a player-plus-deal for his services.
They recently offered Kurt Zouma plus €35m for the France international, but the proposal was immediately rejected.
The La Liga outfit want at least €45m for a part-exchange deal while they prefer to sign Christensen, The Athletic reports.
Christensen has entered the final year of his contract with the Blues, and the hierarchy have yet to renew his deal.
Talks are planned in the coming weeks, but it appears that the Dane could also end up leaving the club for good.
Kounde has already agreed personal terms with the Blues, but negotiations over the transfer fee could take a while.
Tottenham previously made an approach for Kounde, but he rejected them due to the lack of Champions League football