Awkwardly move a ball into empty goalmouth (7)
I believe the answer is:
galumph
'awkwardly move' is the definition.
(to galumph is to move clumsily)
'a ball into empty goalmouth' is the wordplay.
'ball' becomes 'lump' (synonyms).
'into' indicates putting letters inside.
'empty' says to hollow out the word (remove centre letters).
'goalmouth' with its middle removed is 'gh'.
'a'+'lump'='alump'
'alump' going within 'gh' is 'GALUMPH'.
(Other definitions for galumph that I've seen before include "Bound so excitedly" , "Move clumsily, ponderously (colloq.)" , "Leap about clumsily" , "proceed awkwardly" , "move inelegantly" .)