As
@Hammer of Thor pointed out, this doesn’t need to be some big splash outside receiver who razzle dazzles. Anyone who can provide elite production will work, be it a big outside guy, an all-around inside/outside guy, a stud TE, etc. The guy needs to beat man coverage and make defenses pay for not doubling him. Most teams have at least one of those guys.
Patriots fans claim the team gets by without one of these players, but that hasn’t been true at all in the last 15 years. It’s easy to say “we don’t need a number one receiver” when they had the best skill player in the league (Gronkowski), often the best middle of field receiver (Welker, Edelman), and a couple years of Moss. Amendola got a huge contract in 2013 as well. They’ve certainly made efforts to do this…the compound effect of a great receiving threat making life easier for everyone else makes the investment worth it, if you can get the right player.