▁the ▁Football ▁League . ▁ ▁At ▁the ▁end ▁of ▁the ▁season , ▁he ▁was ▁offered ▁new ▁terms , ▁but ▁after ▁m ull ing ▁over ▁the ▁contract , ▁Arnold ▁decided ▁to ▁seek ▁a ▁fresh ▁challenge . ▁" S ever al ▁factors " ▁were ▁behind ▁the ▁decision . ▁ ▁Lincoln ▁City ▁ ▁On ▁ 2 9 ▁July ▁ 2 0 1 6 , ▁Arnold ▁signed ▁for ▁Lincoln ▁City ; ▁he ▁was ▁signed ▁using ▁money ▁raised ▁from ▁the ▁club ' s ▁crowd ▁fund ing ▁scheme . ▁He ▁made ▁his ▁debut ▁for ▁Lincoln ▁in ▁a ▁ 3 – 1 ▁win ▁over ▁W oking . ▁ ▁On ▁ 1 7 ▁January ▁ 2 0 1 7 , ▁Arnold ▁scored ▁an ▁injury ▁time ▁goal ▁in ▁a ▁ 1 – 0 ▁FA ▁Cup ▁re play ▁victory ▁over ▁I ps wich ▁Town ▁to ▁enable ▁Lincoln ▁City ▁to ▁reach ▁the ▁Four th ▁Round ▁of ▁the ▁FA ▁Cup ▁for ▁the ▁first ▁time ▁in ▁ 4 1 ▁years . ▁He ▁was ▁part ▁of ▁the ▁team ▁that ▁not ▁only ▁won ▁the ▁National ▁League ▁that ▁season , ▁but ▁also ▁became ▁the ▁first ▁non - le ague ▁team ▁for ▁over ▁ 1 0 0 ▁years ▁to ▁reach ▁the ▁quarter final s ▁of ▁the ▁FA ▁Cup . ▁On ▁ 1 0 ▁February ▁ 2 0 1 7 ▁ ▁Boston ▁United ▁On ▁ 1 ▁June ▁ 2 0 1 8 , ▁Arnold ▁left ▁Lincoln ▁City , ▁following ▁a ▁mut ual ▁term ination ▁of ▁his ▁contract . ▁The ▁following ▁day , ▁he ▁joined ▁Boston ▁United ▁on ▁a ▁one - year