One struggling to corral ten beasts (4)
I believe the answer is:
oxen
'beasts' is the definition.
(I have seen 'Beasts of burden ' mean 'oxen' so perhaps 'beasts' could also mean 'oxen')
'one struggling to corral ten' is the wordplay.
I cannot quite see how this works, but
'ten' could be 'x' (Roman numeral) and 'x' is present in the answer.
an anagram of 'one' is 'oen' which is present in the left over letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for oxen that I've seen before include "workers in the field?" , "Domestic bovines" , "Domesticated bovine draft animals" , "Lowers" , "Steers" .)