Source: Vikings signing former Mankato receiver Shane Zylstra

Minnesota Mankato tight end Shane Zylstra makes a catch during Minnesota NFL football Pro Day Thursday, April 1, 2021, in Minneapolis. (AP Photo/Andy Clayton- King)The Vikings are signing another undrafted former Mankato receiver.

Shane Zylstra, from Spicer, Minn., is expected to sign with the Vikings, according to a league source, a year after he broke new teammate Adam Thielen's single-season receptions record at Minnesota State-Mankato.

Zylstra led Division II with 81 catches, 1,676 yards and 18 touchdowns as a senior, all of which set single-season program records. Due to the pandemic, he didn't get a chance to work out for NFL teams after going undrafted in 2020. Zylstra most recently…