Is there a specific contract being offered the Yanks and for how long? For example, is it a 2 year contract with recurrent training (if you already have Avro experience)? I can see why Yank pilot would want to come over and spend 2 years (or more) flying around Europe. The US airline industry is in shambles and it is difficult to get on with legacy carriers there that are in bankruptcy...
Flying in Europe for a few years would probably be seen as a vacation to those guys.