His name is Jordan Dawson. He's not a player, coach, or supporter of either club.
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But Jordan has supplied Darwin Nunez and Marcus Rashford with secret weapons.
The talented 28-year-old artist from London customises football boots for a number of the Premier League's biggest stars - and now his clients can't stop scoring.
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Jordan told talkSPORT.com: "I've had a lot of messages from people saying my customised boots give players special powers.
"I gave boots to Rashford before the World Cup and he hasn't stopped scoring.
"I gave boots to Nunez and he hasn't stopped scoring after struggling at the start.
"Then I gave boots to [Heung-min] Son and Emerson [Royal] and they both scored against West Ham the same day.
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"Everyone was messaging me saying, 'Are you sure you don't give them superpowers when you do the boots?'"
In truth, the only real superpower belongs to Jordan, and his gift is appreciated across the world of sport.
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After winning an award for a drawing of UFC icon Conor McGregor in 2017, the artist got to design a five-a-side football pitch in Shoreditch with boxing sensation Anthony Joshua.
Jordan continued: "I made a checklist while I was at university of three things I wanted to do in my career in the art world. One was working with Anthony Joshua, one was working with Chelsea, and the third was working with Eminem. I've ticked off Anthony Joshua and Chelsea.
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"I did a portrait for Joshua three years before the shoot with EA Sports and I didn't think he was going to remember me. He's met tens of thousands of people since then. I walked in and he said, 'Jordan - how are you?'
"That was right at the start of my career. It was a big wow moment that he remembered me."
But it was West Ham and England midfielder Declan Rice who gave Jordan his big breakthrough.
After years of being ignored and toiling in the retail industry, Jordan was offered his first design campaign by Nike.
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That led to customising trainers for Rice and his England teammate Mason Mount, among others.
His work on FIFA 20 resulted in meetings with more famous names in the football world - and Jordan seized his opportunity.
He continued: "I reached out to Rice about a month later on Instagram. I said, 'Hey bro, don't know if you remember me, but I'd like to have a chat about customising your boots'.
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"He said, 'Give me a call'. I spoke to him on the phone, we discussed every day stuff and the design he wanted. He was my first big client and after he shared it, everything snowballed from there."
With footballers uniformly dressed in club kits, Jordan's customised boots present a unique opportunity for individual expression.
That moment of pride and identity was clear when he delivered Nunez's boots to the Liverpool star's home.
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"They get given stuff all the time," he said. "This is more personal to them. It allows them to express their personality while playing through their boots.
"With Nunez, I went to his house and he kissed the Uruguayan flag. You knew it meant a lot to him. He doesn't speak great English, it wasn't easy to communicate, but you could see his face.
"As soon as he was holding them, there was just a shine on his face. Seeing their reaction in person, you just can't beat it."
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So, who's next? Jordan is a Chelsea fan - and Graham Potter's men have struggled for goals this season…
"With Chelsea, I've worked with Mount and I'm hoping to do some work with Joao Felix," he said.
"I'm currently speaking to Michy Batshuayi at Besiktas and Rafael Leao at AC Milan. Although I love doing the Premier League, I think going worldwide would be even better, and why not!
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"I've got a few big players lined up so there should be some exciting stuff coming soon."
To keep updated with Jordan's superstar clients and their footwear, follow his Instagram page here.