Two more friendlies have been added to City's pre-season schedule with trips to Grimsby Town and Doncaster Rovers confirmed.
The Imps will travel to Blundell Park to take on Grimsby Town on Tuesday 28 July (7pm KO). David Artell's side finished seventh in Sky Bet League Two last season and were knocked out of the play-offs in the semi-finals by Salford City.
City will then make the journey to Club Doncaster Sports Village to face Sky Bet League One outfit Doncaster Rovers on Saturday 1 August (3pm KO).
Grant McCann's side secured safety in their first season back in the third tier last time out, finishing 14th and will provide another strong test for Chris Cohen and Tom Shaw's squad ahead of the new campaign.
This will be the first of two first-team friendlies on 1 August, with another game at 7pm. This will be close enough that fans can attend both if they wish and is expected to be the final fixture open to supporters prior to the start of the season.