After reading the last article this is what I believe will happen here:

 Of all the outcomes this is the most likely to happen:

Trump agrees not to seek public office to avoid an indictment

However, Trump is so weird this also could happen:

Trump is indicted, convicted, and ends up behind bars — but he can still run for president

So, like I said Trump is so weird that the above could happen where he is indicted, convicted and is in jail 

and still is president. How crazy is that? 

However, since he is so mafia and Mafiya like (Mafiya being a member of the Russian Mafia under Putin directly) and since so many Mafia leaders run their gangs from jail this could also happen that Trump is president and runs his Mafia Gang presidency from Jail.

I don't see any reason why Biden would pardon Trump EXCEPT:

Biden might want to protect the office of presidency for hundreds of years by pardoning Trump with the condition that he NEVER RUN FOR ANY OFFICE AGAIN, especially as U.S.  President or Speaker of the House (which is not necessarily an elected office I hear).