On July 17, 2021, Karampelas moved to Larisa, under his former coach Nikos Papanikolopoulos. In 35 league games, he averaged 5.3 points, 2.7 rebounds and 2.9 assists, playing around 20 minutes per contest.
On August 15, 2022, Karampelas signed a three-year contract with AEK Athens and was subsequently loaned to Apollon Patras for the first season.[4] In 22 league games, he averaged 6.9 points, 2.9 rebounds, 4.5 assists and 1.1 steals, playing around 24 minutes per contest. On May 2, 2023, Karampelas returned to AEK.[5]