German guy in F1 (5)
I believe the answer is:
fritz
'german guy' is the definition.
The definition suggests a singular noun which matches the answer.
'f1' is the wordplay.
I cannot quite see how this works, but
'f1' could be 'f' and 'f' is present in the answer.
The remaining letters 'ritz' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Another definition for fritz that I've seen is " German man's name".)