The Mets are leaning toward starting Montero in Cincinnati on Tuesday, the New York Times' James Wagner reports.
Tuesday is Jacob deGrom's spot in the rotation, and it has already been revealed that he won't be able to make that start due to forearm soreness. Montero will start Saturday for Double-A Binghamton, but the plan is to cut that start short, essentially treating it like a side session. It has been a rough year for Montero, as he has posted a 7.20 ERA in 80 innings at Triple-A, while being passed over several times for promotions to the big league rotation. However, he has been much better at Double-A (1.70 ERA, 1.09 WHIP, 38:19 K:BB in 47.2 innings), so perhaps his struggles at Triple-A can be attributed to the hitter-friendly conditions of the Pacific Coast League.