There was a big drop off from Jackson. I think Awosika improved during his stint replacing Jackson but there is still a marked difference.
That said, there are several other guards in line to get paid. I don’t know their injury history, but Jackson has missed nine games over two seasons. That will not help his market. Also, as someone pointed out (MB?) Detroit will give him his best chance at a Super Bowl.
This article (take it for what it’s worth) suggests a one year prove it deal, $3.5 million, $2 million guaranteed. Thid might not be the year Jonah breaks the bank. https://atozsports.com/detroit/can-lions-keep-jonah-jackson/#gid=ci02d58c194000278d&pid=usatsi_20838711