Dogged right back has trouble with gutless England (7)
I believe the answer is:
fretted
'dogged' is the definition.
(thesaurus)
'right back has trouble with gutless england' is the wordplay.
'back' indicates one should take the final letters (the letter at the back).
'has' means one lot of letters go next to another.
'trouble' becomes 'fret' (I've seen this in another clue).
'with' says to put letters next to each other.
'gutless' means to remove the middle letters.
'england' with its middle taken out is 'ed'.
The last letter of 'right' is 't'.
't' put after 'fret' is 'frett'.
'frett'+'ed'='FRETTED'
(Other definitions for fretted that I've seen before include "Was constantly anxious" , "worn" , "Worried" .)