Getty Pittsburgh Steelers tight end Pat Freiermuth spoke highly of Drew Allar's development at practice this spring. First and foremost, tight end Pat Freiermuth has been working hard on developing his chemistry with veteran Aaron Rodgers this offseason. Freiermuth has also continued to work with one of his longest teammates Mason Rudolph and quarterback Will Howard. But that doesn’t mean Freiermuth hasn’t also spent time with rookie signal-caller Drew Allar. Through mandatory minicamp this