Dagnall is one of a number of players who have worn the sky blue and red shirts of City and the O's over the years…
Coventry City take on Leyton Orient tonight and one member of the O’s squad will be taking on their former club.
Here we look at three players who have appeared for both teams, starting with a player who rose through the Academy ranks with the Sky Blues...
The name Andy Whing will go down in Coventry City history. Not for cup final heroics or record appearances, but for scoring the last ever goal at Highfield Road as City said goodbye to playing in Hillfields after 103 years.
Whing came through the City academy as made his debut in 2003. For the next three years he established himself in the first team, and his most famous moment came on that sunny day in May 2005.
City destroyed Derby County 6-2, with Whing's high five celebration after the goal being an image that will be used again and again.
Whing left to join Brighton in 2007 before moving to Orient in 2011. He is currently at Oxford.
Making his debut at Cambridge United, Simpson quickly caught the eye of then City boss Iain Dowie, who brought the youngster to the club in 2007.
He scored after five minutes of his competitive debut, in a League Cup tie against Notts County. After four goals in 61 appearances, Simpson was transferred to Huddersfield Town in 2009 for £300,000.
After a couple of loan spells, he joined Orient in 2013 and was on the bench in the O's Play-Off Final defeat to Rotherham in May. He is now back at Cambridge United in League Two.
After being best known for his prolific spell at Rochdale, Dagnall signed permanently for Orient in the summer.
Dagnall went to the Dale in 2006 after leaving his hometown club Tranmere. He scored 54 goals in 140 games as the club finally achieved promotion after 41 years in the same division.
He then joined Scunthorpe, and later Barnsley, struggling for goals at each. He joined City on loan in 2013, scoring once in six games, his only goal being in the Sky Blues' famous 3-1 win at MK Dons.