Dogs maybe tailing learner in this yarn? (5)
I believe the answer is:
lisle
'this yarn?' is the definition.
(lisle is a kind of yarn)
'dogs maybe tailing learner' is the wordplay.
'dogs maybe' becomes 'isle' (Isle of Dogs).
'tailing' is a charade indicator (letters next to each other) (to tail can mean to go after or follow).
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'isle' put after 'l' is 'LISLE'.
'in' is the link.
(Other definitions for lisle that I've seen before include "(Fabric woven with) a fine cotton thread" , "Pedestrianised city" , "Strong cotton fabric" , "Type of cotton yarn" , "Maker of hose" .)