Luke Ashworth, Liam Dickinson and Jack Banister have all signed ahead of the new season.
Centre-back Ashworth returns for his second spell at the club, after spending last season with Evo-Stik Northern Premier League side Stalybridge Celtic where he played over 50 games and was a mainstay in their backline.
Bolton-born Ashworth came through the ranks at Wigan Athletic, turning professional in 2008.
After a loan spell at Leyton Orient in 2008 where he made three appearances, he signed for the O`s on his release from Wigan in 2009.
After 10 appearances, he joined Rotherham United in 2010, making 9 appearances and in 2011 made the move to non-League football with Harrogate Town, making 9 appearances before moving to Halifax Town.
He saw out the season at Halifax, going on to make 13 appearances, and joined Hyde United in 2012 for two seasons during which he made 72 appearances and scored twice.
After a loan spell at Chester in 2014, making three appearances, he left Hyde and joined up with FC United, being almost ever-present in their back-line over three seasons, totalling 98 appearances and scoring 9 goals.
Experienced striker Dickinson, who also played a key part at Stalybridge last season as their top goalscorer, has also come on board to add more depth to FC United`s forward line.
Dickinson originally joined Celtic after being without a club for a couple of weeks following his release from Stockport County.
He came through the youth ranks at Blackpool, also spending time at the academies of Bolton Wanderers and Blackburn Rovers, until his release at 2002 from Blackburn's academy when he was 18.
He joined Irlam briefly, before moving onto Swinton Town.
In 2003 he moved up the pyramid to join Trafford, going onto make 43 appearances and scoring 11 goals during his season there.
A move to Woodley Sports for a season followed, grabbing 9 goals in 38 appearances, and this earned him a chance with Stockport in 2005, and he went onto score 33 times in 98 appearances for County's first-team.
In 2008 he transferred to Derby County, where he made 9 appearances but failed to find the net and was loaned out to Huddersfield Town, Blackpool and Leeds United, finding the net 10 times in 28 appearances for his loan clubs.
In 2009 he left Derby to join Brighton & Hove Albion for whom he scored 4 in 27 appearances.
In 2010 he was once again loaned out, this time to Peterborough United, scoring 3 goals in 9 games before returning to Brighton.
For the 2010/11 season he went to Barnsley, and despite three appearances, he was sent mainly on loan to Walsall and Rochdale.
At the end of the 2011 season he was released to join Plymouth Argyle, but could not break into the first-team at Home Park and joined Southend United, for whom he scored 10 times in 30 appearances.
In 2013 he re-joined his first senior league club, Stockport County, after their relegation into the Conference, but only managed 5 appearances and a goal before his release.
After being a massive part of Celtic's survival in the 2013/14 season, Dickinson started the 2014/15 season off at a rate of knots, but in February got an offer from Guiseley AFC, and decided it was too good to turn down.
After a season with Guiseley in the Conference, making 47 appearances and scoring 8 times, he joined Bradford Park Avenue on loan, eventually making the move permanent.
He has made 17 appearances and scored 6 times for Avenue and re-joined Celtic on loan before his return, but after a promising pre-season back at Bower Fold, he returned a few weeks into the 2017/18 season for a third spell.
Winger Banister, who was on trial during the summer, has impressed during his short time at the club and looks set to be another strong addition to the squad.
He helped Widnes to promotion from the Hallmark Security League, making 34 appearances and scoring 12 goals.
He was previously with Prescot Cables and Skelmersdale United.
FC United`s player-manager Tom Greaves spoke to http://www.fc-utd.co.uk on his latest arrivals: “Liam will bring something completely different to the other forwards at the club and is the type of striker that FC have been lacking in recent years, he’s got plenty of experience in the football league and has scored and made goals for others wherever he has played. His ability to get hold of the ball and bring others into play is superb and he will be another great attacking option for us”.
On the returning Luke Ashworth, Greaves said: “Luke is another old face I was keen to bring back to the club, not only for his consistent performances at the back he’s a threat going forward from set pieces which is something we lacked last season. Luke has plenty of experience in this league and I’m delighted to have him back on board.”
He added: “Jack is a player we’ve kept tabs on for a while and after impressing in trial and pre-season games is a player we have high hopes for, His turn of pace his skill and his eye for goal will certainly be a great asset to us and will get the fans on their feet”.