Chelsea manager Thomas Tuchel decided to sell Billy Gilmour and not co-owner Todd Boehly, according to journalist Simon Phillips.

The Scottish midfielder joined Brighton on deadline day, but Phillips has told GIVEMESPORT that Boehly wanted to keep him, while Tuchel was ok with a departure.

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What is the latest news involving Gilmour?

Gilmour moved to the Amex Stadium in a £9m deal at the end of the transfer window after a disappointing loan spell at Norwich City last season, something Tuchel recently spoke about.

"We had high hopes and he played for us in the first half-a-year when I was at Chelsea, played some important matches for us and looked for a new challenge that did not go so well for him with Norwich," the German said last week (via MailOnline).

"We expected more, he expected more so it was like, without pointing a finger, but it is difficult also for him and for us to not succeed, to not play at Norwich, to be relegated and then suddenly be a central midfielder for Chelsea and competing for top four and for every title."

While Chelsea lost a midfielder on deadline day in Gilmour, they were able to bring one in after signing Denis Zakaria on loan from Juventus.

What has Phillips said about Gilmour and Chelsea?

When it came to Gilmour's future, Phillips says not everyone at Stamford Bridge was on the same page.

Speaking to GMS, the journalist said: "I'm told on this one, Todd Boehly and the other Chelsea owners didn't want to sell. This was Thomas Tuchel's decision, and if it all goes wrong, this is all on him.

"I think it's a big mistake selling Gilmour on a permanent deal unless you've got a really good buy-back clause in it, but to reiterate, Boehly wanted to keep Gilmour; Tuchel wanted to sell him and Tuchel was being 100% backed."

Should Chelsea have sold Gilmour?

Gilmour is a very talented player. The 21-year-old, who has been hailed as "world-class" by his Scotland team-mate John McGinn, could have been a valuable asset for Chelsea going forward.

Another loan move, therefore, probably would have been better for the Blues. It is clear, though, that Gilmour wanted a permanent switch away from Stamford Bridge this time around.

"Ideally it would have been another loan. Billy did not want to go on loan, it was a no-go for him so in the end we agreed to a sale," Tuchel revealed.

When you consider that, the west London club seemingly had little choice but to grant Gilmour a transfer to Brighton.