Colourless football team switching pair at the back (6)
I believe the answer is:
Here is my best explanation:
'colourless football team' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
'switching pair at the back' is the wordplay.
'switching pair' becomes 'albi' (I can't explain this - if you can you should give a lot more credence to this answer).
'at' becomes 'on' (location).
'the back' says the letters should be written backwards.
'on' reversed gives 'no'.
(Other definitions for albino that I've seen before include "Person lacking natural pigmentation", "Animal with pigment deficiency", "One devoid of natural pigmentation", "Person or animal lacking natural pigments", "Abnormally white animal - on Bali (anag)", "A plant lacking in pigment", "Abnormally white person or animal", "Plant lacking pigment", "Person lacking pigment" and "No bail for one lacking colour pigment".)