The opening days of the free-agency legal tampering period are often the riskiest ones in the NFL.
Teams are flush with spending money and stuck fighting over a limited number of good players, creating bidding wars that produce huge, multiyear salaries jam-packed with guarantees. It's a costly and dangerous way of acquiring talent.
Not all contracts agreed upon early are inherently risky. However, the deals that involve giving big financial commitments to questionably talented players often create major, cap-crippling regrets down the road. Massive new deals for good-but-not-great players also arrive with significant risk.
If you're expecting to find Nick Foles, don't bother.