Well, our first SB championship was led by two guys, on each side of the ball, who came into the league as UDFA's. Warner & Fletcher. Not to mention guys like Tony Horne, who were important role players. So it happens.
And no one is saying any of the UDFA TEs will be stars, but if Higbee gets hurt again and retires, it would a shame if a guy like Villari moves on and becomes a solid to good starter on another team in 2 yrs.
BTW, besides the 3 you
mentioned, we have a number of late 7th rd draft picks and UDFA's, who play key roles on this team or are looked at as guys that can be contributors this year and beyond.
So again, its about wasting a roster spot on a guy who is on his last legs, at a deep position, where they could get by without him, while developing a couple young guys for the future. This is especially important since they have multiple guys at TE who will be FAs next year along with a tight cap situation.