The Diamondbacks have agreed to a five-year, $60 million extension with Miguel Montero, according to sources. The extension is not believed to include a no-trade provision. Montero, 28, has thrown out a National League-leading 47.6 percent of runners trying to steal (28 of 60) this season. He is hitting .252 with two home runs and 21 RBIs in 38 games.