。
I'll meet him at the club.
Literal
I [topic-は] club [at-で] him [to-に] meet.
Another 会う + に example — the person met is marked with に, not を. クラブで uses で for location of action. The Japanese loanword クラブ covers everything from 'club' (a venue) to 'club' (an organization) to 'club' (a stick).