As a suggestion, if your going to work as an expat, get your contract and pay in GBP or Euros. For instance, 50,000 GBP = 73,804 Euros = 98,813 U.S. dollars.
The british pound tends to be the more stable currency with the Euro moving along. If you take it in U.S. build in a 10 percent fluctuation factor when your negotiating salary per year. I've known a lot of expats screw that one up and end up getting screwed.