FC Twente chairman Joop Munsterman has confirmed talks with Chelsea over Marko Arnautovic.
"We are negotiating with Inter, Chelsea and other clubs," Munsterman told Voetbal International.
"If they make a formal approach then FC Twente will be too small for Arnautovic."
Blues defender Slobodan Rajkovic is on loan at Twente and could be offered permanently as part of a swap deal.