The Seattle Mariners and Arizona Diamondbacks have already linked up on one trade this year. There could be another one brewing in the shadows.

However, according to USA Today’s MLB expert Bob Nightengale, the Mariners aren’t done after trading for Naylor. Now, they’re also “aggressively pursuing” All-Star third baseman Eugenio Suarez, who’s widely expected to be traded from the Arizona Diamondbacks.

The Mariners will need to trade some prospects in order to become World Series contenders, and here are two that should be on the move.