Following weeks of speculation Harkin signed on at a pre-season get together at the University of Brighton.

Boro have been tracking the ex-Crawley and Havant and Waterlooville play maker during the close season and Nick Greenwood is delighted to finally land the former Irish Under 21 international.

Greenwood said, "Mo has a proven record at this level and he will be a fantastic addition to the squad. We wanted all of our signings to have experience of the Conference National and Mo certainly has that."

Greenwood added, "Last year we were very solid but perhaps sometimes we lacked that something extra when the games got tight.

"We feel Mo can give us that bit of creativity and pick out a killer pass to unlock defences."

Harkin will join Jean-Michele Sigere and Simon Wormull as the new signings this year.

Players were put through their paces during their first training session using the facilities at Brighton University, Denton Road on Saturday.

Greenwood said, "The squad looked in good shape. They know we will be asking a bit more from them this season.

"We will be up against full-time sides so the fitness levels will need to be that bit higher."