Someone helping at Old Trafford without computer assistance (8)
I believe the answer is:
manually
'without computer assistance' is the definition.
(as opposed to automatically)
'someone helping at old' is the wordplay.
'someone helping' becomes 'ally' (an ally provides help or support).
'at' says to put letters next to each other (I've seen this in other clues).
'old' becomes 'manu' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ally' put after 'manu' is 'MANUALLY'.
'trafford' is the link.
This may not be correct. It may belong to another bit of the clue.
Can you help me to learn more?
(Another definition for manually that I've seen is " By hand".)