Telvin Smith trade for Ogletree or Alexander

There is a manager in one of my Dynasty leagues that has offered me Telvin Smith for Ogletree (which I declined) and now for Kwon Alexander.  I'm relatively new to both IDP and Dynasty.  Would you make either trade?  What's the catch?  BTW my starting 4 LB are Ogletree, Jamie Collins, Mosely, and Alexander.  David Harris is on my bench

I wouldn't trade Ogletree for either player as he has top 5 LB potential this year.