Chelsea are understood to be exploring a deal for Manchester United forward Jadon Sancho.
They are looking at both a permanent and a loan. A proposal could include a player being offered to go the other way.
Talks have taken place between the clubs.
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Juventus remain in discussions over a deal for Sancho.
Chelsea still looking at signing a No. 9 this week.
Victor Osimhen remains a possibility. Any player Chelsea sign has to fit into their wage structure. Up to seven players set to leave before Friday deadline.
The average base wage of players Chelsea have been signing is below £72,000 a week Premier League average.