He played 132 league matches for the club, as Scunthorpe suffered numerous play-off defeats before he was sold to Port Vale in July 1992 for a £17,500 fee.

[5] In the 1987–88 season, Scunthorpe finished one point short of Bolton Wanderers in third place,[6] and were then defeated by Torquay United in the play-off semi-final.

[8] They suffered the same fate in 1988–89, one point off third place Crewe Alexandra, again with superior goal difference,[9] before losing to Wrexham in the play-off semi-final.

[5][16][17] Signed to replace the veteran Mark Grew, who had left for Cardiff City, Musselwhite started 1992–93 as second-choice behind Trevor Wood.

[18] However, on 5 September 1992, Wood conceded a penalty at Vetch Field in an 'off the ball' incident with a Swansea City player and was subsequently dropped in favour of Musselwhite.

[18] On 24 October, he gave away a penalty kick in a 2–1 defeat at Potteries derby rivals Stoke City, though claimed that Mark Stein had dived.

[18] Vale finished the season one point behind Bolton in third place,[19] and they lost in the play-off final 3–0 to West Bromwich Albion.

[20] Vale did have success at Wembley Stadium in the 1993 Football League Trophy final, recording a 2–1 victory over Stockport County.

[citation needed] When they played away against Charlton Athletic on 29 April 1995, he was rested to allow his understudy, Arjan van Heusden, to gain some first-team experience in an end of season fixture.

[5][34] He was the club's first-choice goalkeeper as Hull reached the play-offs, only to lose to Leyton Orient in the semi-final,[35] after a sixth-place finish 2000–01.

[38] On 26 December 2002, he was in goal for the club's first competitive fixture at the KC Stadium, keeping a clean sheet in a 2–0 win over Hartlepool United.

[49] In November 2006, Musselwhite signed for Conference North club Kettering Town but was released later that month after Mark Osborn returned from suspension.

[50] In January 2007, Musselwhite received a phone call from his former teammate, the Port Vale manager Martin Foyle, inviting him back to the club as cover for long-term injury victim Mark Goodlad.

[53] Gateshead won their second-successive promotion in 2008–09, beating AFC Telford United 1–0 in the Conference North play-off final.

[55] In February 2009, it was announced that Musselwhite would join League Two club Lincoln City as a player-goalkeeping coach under Peter Jackson at the end of the season.

[71] Musselwhite married Caroline and had a son, Ronan, a junior doctor who was found dead at the age of 23 on 8 January 2020 after struggling with depression.