[1][2][3] He made his first team debut for Nottinghamshire in a T20 Blast match against Yorkshire at Headingley on 19 July 2024, opening the batting and scoring 48 off 32 balls including five 4s and two 6s.
[4][5][6][7] Two days later he took his maiden first team wicket in Nottinghamshire's NCCA showcase 50 over match against Lincolnshire at Lindum Sports Club Ground.
[8] McCann made his List A debut for Nottinghamshire against Leicestershire in the 2024 One-Day Cup at Grace Road on 24 July 2024, scoring 23 and taking three catches.
[13][14] Later that month McCann made his maiden first-class century, scoring 154 for Nottinghamshire in a County Championship match against Surrey at Trent Bridge.
[22][4] His innings equalled the record for the highest under-19 ODI score for England set by Dan Lawrence at the 2016 U19 Cricket World Cup.