It has already been forced to temporarily lay off most of its 1,200 staff, and its planned merger with Spanish airline Air Nostrum has been put on ice temporarily. Now, CityJet, the Irish airline founded by Pat Byrne in 1993, is in talks with its banks and lenders as it grapples with the devastating impact of Covid-19. With its fleet effectively grounded, the airline is attempting reach a deal with creditors that would help steer the business through the crisis. Talks are ongoing, and it is hoped that a debt restructure can be agreed. Like the rest of the industry,…