Borussia Dortmund are willing to strike a £70million deal with Chelsea or Liverpool for Christian Pulisic – as long as he stays in Germany until the summer.

Chelsea and Liverpool, along with Paris Saint-Germain, have a long-standing interest in United States international Pulisic, whose contract is due to expire in 2020.

Dortmund are adamant the forward will not leave in January, but are prepared to negotiate a transfer for the summer if they receive a big enough bid.

Chelsea would have to smash their record transfer, which stands at £57m for Alvaro Morata, to secure an agreement for the summer over Pulisic.

That may not be entirely attractive for the Blues, given the 20-year-old will only have 12 months remaining on his contract at the end of the season.

But Chelsea will also be well aware that they could face big competition for Pulisic if they wait until next summer to make their move.

Chelsea also have to consider the fact they could lose Eden Hazard at the end of the season and the guaranteed arrival of Pulisic would at least soften that potential blow.

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Hazard has conceded that Chelsea’s defeat to Tottenham Hotspur proved they are not fighting for the Premier League title this season, saying: “We are thinking about finishing in the top four, not to be the champions. We know (Manchester) City are not much better than Chelsea but they are better at the moment.

“In what areas are City better? A lot of things: possession; when they have chances, they score; maybe defensively they are better. They have top players.

“Is it due to their consistency as well, winning game after game? Yes, of course. They are in a good momentum since last year and we need to be back like this.”

Even if Hazard stays at Chelsea, Pulisic could take over from Willian and Pedro on the right of the team’s front three.

Liverpool manager Jurgen Klopp is a big fan of Pulisic, while PSG are admirers and could have money to spend if reports they will sell Neymar prove to be correct.

Other than looking at potential signings, Chelsea are having to consider which players may leave during the next two transfer windows.

Gary Cahill has been told he can go out on loan in January before his contract expires next summer and AC Milan have held talks over a move for Cesc Fabregas.

Fabregas is also out of contract at the end of the season, along with central defender David Luiz.