Think Jimmy Graham, if you will.
The most compelling Attributes of a Flex End, in the 21st Century, are, in my view, and in no particular order:
Release ~ How Adeptly he employs Burst, Core Strength, Fluidity, & Combat to Dust Off the Defender
Routing ~ How Adeptly ~ Crisply, Intelligently, and Reliably ~ he Runs the Route Tree
Separation ~ Fluidity & Ricochet ~ Explosiveness out'f'is Breaks
Catching ~ Reliability & Technique
Navigation ~ How well he Navigates the Field in Pursuit of Yards After Catch
Blocking ~ Core Strength, Drive Power, Fluidity, and Combat
Routing ~ Excellent > very Crisp & Disciplined.
Separation ~ Poor > not especially explosive out'fi's Breaks.
Catching ~ Magnificent > an explosive Leaper, a phenomenal HighPointer, and just terrific Hands.
Navigation ~ Fair > Mediocre Ricochet out'f'is Breaks, but decent Speed and excellent Strength.
Blocking ~ Good enough, and improving. He could fit as a classic Tight End, though Flex End is his best Fit.
Tyler Eifert projects best as a Flex End, but he could play Tight End right now, and could become a very good one.
This is extremely important, because while a Flex End who can block well for a Flex End ~ which Eifert can ~ can be a Dangerous Dual Threat, because in addition to being a Receiving Weapon, he can be a combination Blocker.
But a true Tight End ~ a legitimate Force both as a Receiver and as a Blocker ~ is a significantly more powerful Weapon, for he can take on ~ and take out ~ Defensive Ends all on'is own and thus provides Full Scale Duality.
Eifert's Potential to develop into an Impact Tight End ~ rather than a more limited Flex End, which he is ready to excel at immediately, mind you ~ adds significant Value to'is Stock.
Having so noted...
Eifert doesn't command explosive Ricochet out'f'is Breaks, so he's not the best Router, but he's Crisp & Disciplined. And he's an exceptionally instinctive HighPointer with a great sense of Timing and simply awesome Hands.
He is going to be an extremely deadly Weapon.
Consensus Market Value