3. The contract does not guarantee Herrera is around for, say, 2019: The Phillies are obviously high on Herrera. They have every reason to share that sentiment. But a contract extension like this only makes him more tradeable — if the Phillies ever do decide to explore such an option. It is true that the Phillies floated him on the trade market last summer and even earlier this offseason, but it was more of a challenge trade according to sources from two teams who spoke to the Phillies. They were not motivated to trade Herrera, unless another team made an overwhelming offer. (Think Ken Giles and Houston.)