Pierre-Emerick Aubameyang made his Barcelona debut in Sunday's 4-2 win over Atletico Madrid with his Arsenal allegiance very much on show.
The forward left Arsenal on deadline day for free, allowing him to sign with the Catalan giants.
Aubameyang had been frozen out at the Emirates since mid-December and was linked with a January exit.
Just 18 months ago he penned a new deal in north London following an impressive season during which he scored the winner in the FA Cup final.
However his form dipped after signing a fresh bumper contract and a disciplinary issue proved the final straw for Mikel Arteta at Arsenal.
Aubameyang's affection for the Gunners though will forever be on him.
The Gabon international donned his new colours at the Nou Camp on Sunday but his Arsenal tattoo was clearly visible on his right arm.
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An image of him with his two children walking out onto the Emirates turf has been inked onto his arm.
The 32-year-old has admitted to facing a challenging period and appeared to lay the blame for his Arsenal exit at Arteta's doorstep.
"A difficult few months. I've never wanted to do anything wrong, it's in the past," said Aubameyang.
When asked if he had a problem with the Gunners boss, he added: "Yeah, I think it was just with him. I can't say much, he wasn't happy, I stayed calm and that's it."
Aubameyang came off the bench as Barcelona saw off LaLiga rivals Atletico Madrid 4-2 at the Nou Camp.
The Catalans only had four shots on target, but netted with each of them as Gavi and Dani Alves both netted, with the latter also getting sent off.
Aubameyang was one of several January arrivals with Ferran Torres and Adama Traore also swapping the Premier League for Spain.
The former Arsenal man is confident he can contribute in Catalunya.
He said: “I think that for years people that know me know that I score goals and I’m a quick striker, so I hope to help the team with my goals and score a lot of them for Barca.
“This is the opportunity of my life, I’m buzzing and I’ll give everything. I have to thank the club and it’s an honour to be here. I’m ready to help the team."
He also added: “I see myself as ready and I think that I’ve had a lot of luck playing in the Premier League. I am prepared to play in the Barca style."