My guess is $7.25 x 5 years with the Ducks.
His injury issues are...interesting. Lindholm hasn't suffered repeat injuries to the same spot, but seems unlucky enough to be injured for a lengthy period of time every 1.5 - 2 years.
When he is on, he is our best defensive D. Even when healthy though, he hasn't been a strong offense driver...just generally a good 2-way player. That would lean me towards a little bit higher on an AAV basis if you were take some recent comparables, but not for anything longer than 5 years.