16岁103天，马利-萨蒙是英格兰俱乐部第3位欧冠出场的U16球员（年仅16岁零103天，马利-萨蒙成为英格兰俱乐部欧冠历史上第3位登场的U16球员）

Exploring player identity

I’m considering if the player could be "Mahl Semon" or "Mali Salmon," maybe even "Mahli Ssemombe." There's also "Mahmoud Sadiq," but I'm uncertain. To clarify, it might be best to ask which club and match they’re referring to. It's important to note that "U16" could indicate academy registration rather than age. Should I offer to provide a list of other players or verify the stat? Also, I remember Jack Wilshere debuted in the UCL at 16!Identifying UCL debut milestones

I’m considering several players and their UCL debuts. Josh McEachran debuted at 17 years and 193 days for Chelsea. Wayne Rooney didn't play UCL for Everton but did for Man U at 18. Phil Foden debuted for Man City at 17. Karamoko Dembele and Michael Owen (who couldn't debut for Liverpool until UCL existed) are also on my mind.

I also think about Lewis Miley, Callum Hudson-Odoi, and Raheem Sterling, who debuted at different ages. Jack Wilshere debuted at 16, and I wonder if we can include Aaron Lennon or James Milner, but Leeds’ timing complicates it!Identifying player details

I’m realizing that a player like Milner couldn't have played in the UCL for Leeds since he made his league debut at 16 in November 2002, but Leeds weren’t in the UCL that season. As for Luke Shaw, he doesn’t fit.

I’m pondering if the player could be at Manchester United, perhaps "Mali Salmon." I think I might have a memory of a youth player named "Mali Salmon" in the U18 team. I need to confirm that!Reviewing UCL appearances

I recall that "Mali Salmon" scored braces for Man Utd U18 in 2024. His name matches the Chinese transliteration, and if he's 16 in 2024, that makes sense. The claim is that with 16 years and 103 days, he became the third U16 player to appear in the UCL for an English club. That's quite rare for Man Utd!

I’m also considering other players: Jack Wilshere debuted at 16, and I’m trying to remember who else fits this age group as UCL participants.Clarifying user intent

I’m thinking about how to engage the user effectively. I want to ask whether they need verification, corrections, or expansions in a concise manner. Responding in Chinese, I can ask if they want to 核实 or 要配图 or 列另外两位.

It seems “U16” typically refers to those 16 and under, so “16岁103天” fits! I could guess the other players might be Jack Wilshere and someone from Manchester United, but I want to avoid making assumptions. I’ll confirm their club and match timing to verify further.

I can also provide a draft social media post summarizing their achievement, but I’ll check if they want that first. Additionally, acknowledging their statement with a brief context about the youngest UCL players could be helpful!