The Vikings waived Proehl on Tuesday, Andrew Krammer of the Minneapolis Star Tribune reports.
Proehl signed a reserve/future contract with the Vikings on Monday, Chris Tomasson of the St. Paul Pioneer Press reports.
The Vikings signed Proehl to their practice squad Thursday.
The Vikings waived Proehl on Tuesday.
Proehl (knee) was activated from the reserve/PUP list Monday.
Proehl (knee) was designated to return from the PUP list and returned to practice Wednesday, Craig Peters of the Vikings' official site reports.
Proehl (knee) was switched from the active/PUP to reserve/PUP list Tuesday, Craig Peters of the Vikings' official site reports.
Proehl (ACL) was placed on Minnesota's physically-unable to perform list Monday, Chris Tomasson of the St. Paul Pioneer Press reports.