Legal Permanent Resident Outside the country for one year due to COVID or other Special circumstances.

2/15/2021 -  Green Card Holders Outside the US Impacted by COVID Policies

Absences of 6 Months but Less than A Year
Six months (180 days) is a bit of a dividing line for U.S. residents who've been outside the country. Once you've been gone that long, the law regards you as an applicant seeking admission to the U.S. (under I.N.A. § 101(a)(13)(C)).

Upon return to the U.S., you'll need to be ready to show documentation to overcome any new
inadmissibility issues that might have come up in your life, but the primary hurdle you will have to overcome is to prove that you did not intend to abandon your legal permanent resident status
and that you always intended on returning to the US.

If you return to the U.S. just before 180 days is up, U.S. border officials are always free to
decide that you meant to make your home elsewhere; that is, abandoned your U.S. residence. To
prove otherwise, bring copies of documents showing that the U.S. is still your home base.
Examples include copies of U.S. tax returns, a home lease or mortgage, evidence of employment,
and so on. Also bring written evidence of your reasons for not traveling back to the U.S. earlier,
such as doctor's statements or copies of notifications that your flights were canceled.\
Absences of More Than 1 Year

After one year outside the U.S. your legal permanent resident status will be considered to be
canceled. This means you could be denied entry to the U.S. and your case will not be as simple as
a case in which it is over 6 months but under a year.