The 20-year-old midfielder has spent time training with the Eredivisie outfit this summer and a short-term deal has been mooted for some time.
Liverpool consider the Hungarian starlet to be a hot prospect for the future, but are aware that he needs regular games at a competitive level if he is to fulfil his potential.
With his route to the first team currently blocked at Anfield, a loan switch would appear to suit all parties.
Groningen are confident Adorjan will be with them for the 2013/14 campaign, with a deal having been struck with Liverpool.
All that is required now is for the player to agree to a switch, with talks planned early this week.
Groningen general director Hans Nijland posted on his personal Twitter account: "Krisztian Adorjan will re-join our first team squad on Monday.
"There is an agreement with Liverpool and now negotiations with Adorjan have to take place."