Stephen Martin "Steve" Lomas (born 18 January 1974) is a Northern Irish former professional footballer and was most recently manager of Football League Championship club Millwall.
Michael "Mick" McDermott (born 1974 in Belfast) is a Northern Irish former professional football player.
 He has held various coaching roles in professional football clubs as well as at the international level over the past 15 years.
 He is currently caretaker manager of Iranian football club Esteghlal; he also previously held the position of fitness coach of Iran national football team.
 he has played in USL Second Division.
Kenneth James "Kenny" Brown (born 11 July 1967) is an English former professional footballer and current football manager.
 As a player, he played for Norwich City, Plymouth Argyle, West Ham United, Huddersfield Town, Reading, Southend United, Crystal Palace, Reading, Birmingham City, Millwall, Gillingham, Kingstonian, Portadown, Barry Town, Tilbury and FC Torrevieja.
 He has also managed Barry Town, CD Jávea, and Tooting & Mitcham United and been assistant manager with Grays Athletic and Chelmsford City.
 Following the departure of Dean Holdsworth as manager of Chelmsford in November 2013, Brown became their caretaker manager.
Craig John Adams (born 15 February 1974) is an English former professional footballer who played in the Football League for Northampton Town.
 Since retirement, Adams has moved into coaching and management at Wellingborough Town and Bedford Town.
 In May 2015, he was appointed assistant to Gary Mills at Rugby Town, a club which he played for when they were known as "VS Rugby", but Adams left after a poor start to the season to become caretaker manager at his former club Wellingborough Town.
 In May 2016, Adams left his position as Peterborough United Under 16's manager to become the assistant manager to Chris Nunn at Biggleswade Town.
Michael "Mickey" Lewis (born 15 February 1965) is an English former professional footballer and manager who played for West Bromwich Albion, Derby County and Oxford United.
 From October 1999 to February 2000 and then again from January to March 2014 he was the caretaker manager at League Two side Oxford United following the departure of manager Chris Wilder to Northampton Town, before Gary Waddock was appointed head coach.
Ian George Richardson (born 22 October 1970) is an English former professional footballer and football manager.
 He played 260 games in the Football League for Birmingham City and for Notts County, where he spent most of his professional career, including for a time acting as caretaker manager.
 He played as a midfielder or centre half.
Neil Harris (born 12 July 1977) is the manager of Championship club Millwall.
 Harris is an English former professional footballer who played as a striker, and is Millwall's all-time record goalscorer, with 138 goals in all competitions.
 He broke the previous record of 111 goals, held by Teddy Sheringham, on 13 January 2009, during a 3–2 away win at Crewe Alexandra.
 He has made the fourth most appearances for the club, with 432.
 He also played for Cambridge City, Cardiff City, Nottingham Forest, Gillingham and Southend United.
 Harris retired from professional football in June 2013 and took up a coaching role at Millwall.
 Having briefly acted as caretaker-manager after the dismissal of Steve Lomas in January 2014, Harris was given the same role following the dismissal of Ian Holloway in March 2015 and was confirmed as permanent manager of Millwall on 29 April 2015.
Darren James Patterson (born 15 October 1969) is a Northern Irish former footballer and manager.
 He was most recently the caretaker manager of Rotherham United following Andy Scott's dismissal as manager on 19 March 2012.
 As a player, he was primarily a central defender who could also play at full back or as a defensive midfielder.
 He is the interim assistant manager at Bristol Rovers, where he has previously held the positions of Head of Youth, Assistant Manager and Caretaker Manager.
 On 10 June 2011, he became Rotherham United's assistant manager.
John William Cozens (born 14 May 1946) is an English former professional footballer who played in the Football League as a forward for Notts County, Peterborough United and Cambridge United.
 He began his career in non-league football with Tonbridge, was a prolific goalscorer for three seasons for Hayes, and signed professional forms with Hillingdon Borough in 1968, before moving into league football.
 Cozens went on to coach at Cambridge United, becoming assistant manager and on occasions caretaker manager, and managed non-league club King's Lynn for six months in the 1988–99 season.
Stephen James Craigan (born 29 October 1976) is a Northern Irish former professional footballer who is currently the assistant manager of the Northern Ireland Under-19 squad.
 He played in central defence, and spent his entire playing career in Scotland, playing for Motherwell (twice) and Partick Thistle.
 He has also played for the Northern Irish national team.

Question: Who was caretaker manager before Neil Harris and is a northern Irish former professional footballer?
Answer: Steve Lomas