Former Premier League and Norway star Jan Aage Fjortoft has told ESPN that a 'fantasy bid' of £135m is set to arrive on Dortmund's desk.
He said: “Chelsea have him as their main target.
“They would like to test Dortmund with a fantasy offer, and a fantasy offer will be around €150m (£135m) - double what they can get for him next summer."
Chelsea are desperate to get their hands on the 20-year-old now rather than wait until next year - even if Haaland will be available for £65m then.
Fjortoft added: "It's interesting to follow, but most likely, he will stay with Dortmund.
"Dortmund are saying all the time 'he will stay, he will stay'.
"They said that about [Jadon] Sancho one year ago and he stayed, so it is most likely that Haaland will still be a Dortmund player in this coming season, but we're waiting for that big, big offer from Chelsea."