The Carolina Panthers have exhausted all their options in the NFL draft, and they're unlikely to sign any more UDFAs. They also probably won't sign any more free agents, since they are not overflowing with cash. There is one trade they should make, though, which is still possible. Actually, we'll do you one better. Here's an additive trade the Panthers absolutely need to make as well as a subtractive one that Carolina would benefit from. The Panthers should trade for Cole Kmet Chicago Bears tight end Cole Kmet (85) takes the field before the game | Mike Dinovo-Imagn Images Adding a pass-catcher has to be one of the top priorities remaining, if there are any. The Panthers probably don't plan on doing anything, but Bears tight end Cole Kmet is theoretically available , inexpensive, and a huge upgrade. They could part with a 2027 fourth-round pick and waive Tommy Tremble (for salary cap as well as roster space) and Pat Jones (for salary cap).…