Confirmation of his move from Manchester City is imminent, as he has agreed personal terms with a new team.
The England international had entered the final year of his contract with City, who are grateful for his service and will not impede his desire for greater minutes and status elsewhere.
"I don't like to keep players that are unhappy" and was open to allowing Sterling's exit this summer, even to a premier league rival, on condition that an acceptable bid in the region of £50m is tabled.
Todd Boehly, the new owner of the Blues, had been in contact with City to discuss figures and the structure of a deal to add a decisive edge in the final third.
Tuchel would be offered a guaranteed threat by the fact that he has directly contributed 165 goals in the division, as well as tactical flexibility and experience, thanks to the fact that he has played for both City and Reds.
He wants to make a significant contribution on and off the pitch in the final stages of his career.
It's a sign of their solid recruitment and the gap between the clubs that they can cede two attackers to members of the 'Big Six'.
As European teams struggle to compete with their English counterparts, there will be more inter-league transfers at the top end.
Liam Twomey is on Sky Sports.
It's a transfer that could work well for everyone. There isn't much of a market for him outside of his current club, as he has fallen out of favor at Manchester City and has a year left on his contract.
"I think a lot of the big Premier League clubs are experiencing this at the moment where it is easier for them to sell to each other, potentially, than to anyone else." Romelu Lukaku was allowed to go back to Inter on loan and that's a problem for the Blues.
"I think the new owners want to make a statement as well and I think the most exotic or exciting name to some fans of the club is Raheem Sterling, he is a key England international, 27 years old, and he is not the most exotic or exciting name to some fans of the He would be a great addition.
Part of that is because he is so familiar, and I think that's why he's a polarising target. We know his weaknesses as a player, as well as his strengths, as we've been watching him for a long time in the premier league and I think that feeds into the way a lot of the fans view him. I think he would be a very reliable performer because he has been very effective in top teams for a long time.
"We are seeing an increase in the willingness to look at targets from the premier league." They have been burned in the last couple of years by signing players from other leagues who didn't fit in and weren't maximized in the team.
You can see why he would be a good fit for the Blues, as he has already produced at a high level in the premier league for a long time. He's 27 and you could expect him to be productive for a long time.
The transfer window will close at 11pm on September 1st.
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