He was here only one season, so it's not like he was a long-time Oriole. And he left for more money -- or at least a longer contract, signing a four-year, $57 million deal.
So there probably are some people who will boo him.
But he also had an amazing season in Baltimore, helping lead the team to the American League Championship Series while winning the 2014 Most Valuable Oriole award. He also endeared himself to players and fans with an infectious smile and humble personality.
So there probably will be some "Cruuuuuz" chants as well.
Frankly, it may be hard to tell the difference between boos and Cruuuuz.
Here's what Cruz said about the reception he hopes to get.
"I did give them everything I have the year that I played there. Those were some great memories when I was there, great fans," Cruz said. "We accomplished some great things last year and hopefully they will remember me as a good player for that year and part of that team that was such a good team. And I get some cheers, hopefully."
Sounds reasonable to me, but I'm not a fan.
If I were a betting man, I'd say there won't be much response at all. Some polite clapping, a few chants and a few boos. That's often how these things play out at Camden Yards when former players return.