Your second Celtic transfer deadline day bulletin of the day. 67 Hail Hail deliver you updates on Luke McCowan, Andy Irving, Arne Engels, Auston Trusty, Mikey Johnston and Kyogo Furuhashi. Celtic ‘submit bid’ for Luke McCowanThe Bhoys are ‘hopeful’ of completing a deal to sign Dundee star Luke McCowan before tonight’s transfer deadline at 11pm. That’s according to BBC Sport Scotland, who are reporting that the Dens Park club have received an offer from Celtic today. McCowan has been linked with Celtic over the last month or so but it was nothing more than speculation – until now. It comes amid…