Neil Lennon quit as Celtic manager on Thursday after a successful four-year spell at Parkhead. Here is a factfile of the former Celtic and Leicester midfielder:

Born: 25.06.1971

Birthplace: Lurgan, Northern Ireland

Playing career

1987: After starting with Glenavon in the Irish League, moves to Manchester City, but makes just one appearance after back problems.

1990: Joins Crewe on free transfer.

1994: Wins first Northern Ireland cap.

1996: February - Joins Leicester for £750,000 ($1.26m, 926,000 euros).

May - Leicester promoted to Premier League.

1997: Wins League Cup after victory over Middlesbrough.

2000: February - Wins second League Cup after Leicester beat Tranmere.

December - Completes £5.75million switch to Celtic.

2001: March - Reveals he is considering international retirement after being booed by Northern Ireland fans during Windsor Park defeat by Norway.

May - Celtic beat Hibernian 3-0 to complete the treble.

2002: August - Lennon pulls out of the Northern Ireland team on the evening of a match against Cyprus after receiving a death threat. Retires from international football after winning 40 caps.

2004: Celtic complete double with Scottish Cup final win over Dunfermline.

2005: Appointed Celtic captain by Gordon Strachan.

2007: April - Celtic clinch SPL title, the fifth during Lennon's time.

May - Lennon plays his final Celtic match in a 1-0 Scottish Cup final win over Dunfermline.

June - Joins Nottingham Forest.

2008: Joins Wycombe Wanderers.

Managerial career

April 2008: Takes up a first-team coaching role with Celtic.

2009: Under Tony Mowbray, Lennon is put in charge of Celtic's reserves.

2010: Appointed Celtic's caretaker manager after Mowbray sacked.

April - Celtic lose 2-0 to Ross County in the Scottish Cup semi-finals, but finish the season with eight consecutive league wins.

June - Confirmed as Celtic manager on a permanent basis.

2011: January - A package addressed to Lennon containing bullets is intercepted at a sorting office in Country Antrim.

March - Celtic confirm Lennon is under 24-hour security surveillance after a suspicious package is intercepted at a sorting office in Ayrshire.

May - Attacked in Tynecastle technical area by a Hearts fan who was later jailed for eight months.

May - Celtic beat Motherwell 3-0 in the Scottish Cup final days after losing out to Rangers in the title race.

2012: April - Celtic clinch the SPL title with a 6-0 win, but lose to Hearts in the Scottish Cup semi-finals.

November - Celtic beat Barcelona 2-1 in the Champions League group stage.

2013: March - Celtic suffer a 5-0 aggregate defeat by Juventus in the Champions League last 16.

April - Celtic clinch title with 4-1 win over Inverness.

May - Lennon wins first double as manager after Scottish Cup final victory over Hibs.

December - Celtic, whose European exit was already confirmed, lose 6-1 in Barcelona.

2014: March - Lennon's side clinch a third consecutive title with a 5-1 win at Partick Thistle.

May - Lennon announces his resignation as Celtic boss.