The Blues have been linked with a £12m move for the 24-year-old, and are apparently ready to pay him £2m a year.
Del Horno said: "For both Athletic and me it would be difficult to say no to an offer like this.
"With a contract like this I would sort out not just my life but my family too, and Athletic could clear their debts."
Speaking on Spanish radio, he added: "If you look at the figures that are being talked about then it seems unthinkable that a team would pay that sort of money for me.
 |
The Spanish international, who came up through the club's youth ranks, is under contract to Athletic until 2007.
Chelsea have been eager to sign a left-back following Celestine Babayaro's move to Newcastle in January.