There's no way out. You must make a smaller allocation (9)

'there's no' is the definition.
I can't judge whether this defines the answer.

'way out you must make a smaller allocation' is the wordplay.
I cannot really see how this works, but
'way' could be 's' (Compass direction - South) and 's' is present in the answer.
'you' could be 'u' (commonly used in online communication) and 'u' is found within the answer.
'smaller' could be 'less' (less great in size) and 'less' is present in the answer.
The remaining letters 'ise' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?