According to USA Today's Bob Nightengale, busy Arizona GM Kevin Towers might not be done yet.
Ahmed is a 22-year-old shortstop the Diamondbacks received in the Atlanta deal. But with Didi Gregorius already in the mix from an early offseason maneuver, he could be considered only trade bait for Arizona.
Porcello has been rumored as a target for the Diamondbacks before. The 24-year-old right-hander has four full seasons of big league experience under his belt. He's gone 48-42 with a 4.55 ERA for the Detroit Tigers.