Chelsea's No.10 shirt is free for the second summer in a row following Willian’s confirmation of his departure from Stamford Bridge.
Penning an open letter to the club's supporters on Sunday, the Brazilian said farewell to fans after such a memorable time at the club following his switch from Anzhi Makhachkala in 2013.
“They were seven wonderful years. In August 2013 when I received the offer from Chelsea, I was convinced that this was where I had to play,” he wrote.
“Today I am certain that it was the best of decisions. There were so many happy times, some sad, there were trophies and it was always very intense.
“Yet, beyond the trophies, I learnt a lot about myself. I developed a great deal, becoming a better player and a better person. With each training session, with each game, with every minute spent in the dressing room, I was always learning.
“I am really grateful to the Chelsea fans for the affectionate way they welcomed me at Stamford Bridge and their support throughout my time at the club. There was also criticism, which is normal, what is important though is that both the affection and criticism drove me to always give my all in every training session, every game, to be constantly improving until my very last minute in a Chelsea shirt!
“The time has now come to move on. I am certainly going to miss my teammates. I will miss all the staff at the club who’ve always treated me like a son and I will miss the fans. I leave with my head held high, safe in the knowledge that I won things here and always did my best in a Chelsea shirt!
“My heartfelt thanks go out to all of you and God bless you!”
So who could now become Chelsea's new No.10 for the 2020/21 season?
Hakim Ziyech
The Moroccan international may fancy a change and plump for No.10 given he's previously worn it at Ajax, FC Twente and Heerenveen.
Christian Pulisic
Pulisic has never worn No.10 during his club career but there is a first time for everything.
It's a number he is familiar with after wearing it on the international stage for the United States and he may want to do likewise at Chelsea.
Ruben Loftus-Cheek
The England international has worn the number in the past in Chelsea's academy and on the international stage for England, yet it may go to someone else given he's on the fringes of the first team.
Mason Mount
Mount has also done the same as Loftus-Cheek by wearing the number in Chelsea's academy and whilst playing for England.
Kai Havertz
Destined to be the next player to arrive at Stamford Bridge in a big-money deal from Bayer Leverkusen, he is likely to be playing in the No.10 role over the foreseeable future for Chelsea, it would make sense to give him the number since it's available.
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It's only a matter of time before we know Frank Lampard's choice for the No. 10 shirt.
This article was most recently revised and updated 4 years ago
Mason Mount is good for 10
Mason mount did not fit no 10