Before the Raiders traded Amari Cooper to them last week, the Dallas Cowboys reportedly had some calls to make on the wide receiver.
The Cowboys wanted to ensure Cooper was worth sending a first-round draft pick to Oakland for, and all reports came back with glowing reviews, ESPN's Adam Schefter reported Sunday, citing sources.
According to Schefter, the Cowboys' front office called former Raiders coach Jack Del Rio, Alabama coach Nick Saban and Cowboys fullback Jamize Olawale -- who played with Cooper on the Raiders for three seasons -- among others.
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Del Rio coached Cooper for three seasons in Oakland, from 2015 through 2017. Cooper was a two-time Pro Bowl wide receiver for Del Rio and totaled 2,903 receiving yards with 18 touchdowns in his first three NFL seasons.
Saban coached Cooper for three years at Alabama, where the receiver was a star before being the No. 4 overall pick in the 2015 NFL Draft. Cooper had 3,463 receiving yards and 31 touchdowns in his three seasons in college, was a Consensus All-American in his junior year and won the Fred Biletnikoff Award as the top receiver in college.