[14] Johnston and Clark signed a one-year contract extension on 13 April 2013,[15] but then moved onto Kilmarnock as that club's new management team in June 2013.

[19] At the end of the 2014–15 season, Clark departed Albion Rovers and was once again re-united with Allan Johnston, this time as assistant manager of Scottish Championship club Dunfermline Athletic.

[20] Johnston and Clark departed the Pars during January 2019[21] and returned to Dumfries club Queens for a second spell on 5 May 2019, after the departure of Gary Naysmith.

Johnston and Clark joined on a two-year contract and their first game in-charge came in the Scottish Championship play-off first-leg versus Montrose.

[23] On 13 February 2022, Johnston and Clark departed the Doonhamers by mutual consent (4 wins in 24 matches) as the Dumfries club languished in the automatic relegation place in the Scottish Championship.