Every three or four years, a former Packers star decides to come west and bail the Vikings out of a gigantic jam.

Ryan Longwell filled a gaping hole at kicker in 2006 and went on to post six successful seasons. Brett Favre stepped in for a QB-starved outfit in 2009 and led it to within seconds of a Super Bowl. And now former Packers receiver Greg Jennings has signed on with a Vikings team that's bone dry at receiver and hasn't had a legitimate No. 1 wideout since Sidney Rice was catching passes from Favre in 2009. Jennings' deal is for five years, according to ESPN's Adam Schefter.

Jennings doesn't fit Vikings General Manager Rick Spielman's normal parameters for a free agent. Jennings will turn 30 in September and has missed 11 games because of knee and core muscle injuries over the past two seasons.

But here's what Jennings is: Productive. Although he caught only 36 passes for 366 yards and four touchdowns in 2012, he did post 1,100-yard seasons from 2008 to 2010.

Jennings will be introduced during a press conference at Winter Park at 7:15 p.m. We'll have more later this evening.