In December 1954 he joined Accrington Stanley, halfway through their Third Division North second place campaign.
Ever present in Stanley's third-place finish in 1955-56, he excelled in both the left-back role, and the centre-back position.
In April 1960 he was appointed player-manager, overseeing the end of a relegation campaign before presiding over an 18th-place finish the following year.
He eventually resigned his post in December 1961; despite Stanley's dire league form until that point of the season, his resignation was ultimately forced by the club's policy of only appointing player-managers, and the fact that he was no longer able to play effectively.
The club would be managed by a director's committee for the remainder of the season, making Harrower the final manager to take charge of this incarnation of Stanley in the Football League.