Suffering depth issues at the position, the Green Bay Packers signed two new tight ends and dropped another two on Tuesday.

General Manager Brian Gutekunst announced  that they signed TE McCallan Castles and TE Drew Biber and waived/injured TE Luke Lachey and TE RJ Maryland.

According to Packers.com, Castles is a a first-year player out of the University of Tennessee with previous experience with the Packers, Philadelphia Eagles, Los Angeles Chargers, and Los Angeles Rams. Biber is a rookie who played at both Purdue and Minnesota.

The Packers will not have a public practice until they step inside Lambeau Field for Family Night on Friday.