This article from George King of the New York Post about the Yankees possibly giving top prospect Jorge Mateo second base reps during the Instructional League is pretty intriguing, This makes all the sense in the world with Didi Gregorius looking more and more like the shortstop of the future. That's probably a big reason why the Yankees were willing to include Mateo in a deadline deal for Padres closer Craig Kimbrel.
Second base has been such a hole since Robinson Cano left, and that decision is looking more regrettable by the day since they gave Jacoby Ellsbury $153 million and only offered Cano $175 million. Cano has been the Cano we knew and loved in the second half, and the Yankees would probably be a real World Series contender with him in the middle of the lineup. Any team that makes the playoffs has a shot, but the Yankees are probably behind Kansas City and Toronto right now. As long and large as Cano's contract is, it's still better than Ellsbury's.
Mateo didn't play above High-A this year and he hit .278, stole 82 bases and had a .344 on-base percentage. He won't be ready next year, so the Yankees will need another stopgap second baseman if they want Mateo to be the second baseman of the future. It doesn't seem like they feel that way about Rob Refsnyder, and the Yankees are usually very good in self scouting. Just thinking about the athleticism of Mateo and Gregorius playing together is very exciting and something to keep an eye on.