Trade help Cirk and Shepard

I’m in a 10 team ppr dynasty league, I have good depth overall and have traded my 2020 2nd round pick away. I have Mixon, K Johnson, M Thomas, Adam’s, C Kirk, and Josh Jacobs as my main roster. Someone in my league wants Kirk for Shepard and a 2020 2nd, what do you think? I feel like Kirk has more value as time goes on and Shepard only stays dominant while Saquon is off the field. Thanks!