Complex sentence: Following the season Okajima returned to Japan, signing a one-year contract with the Fukuoka SoftBank Hawks, following the season he considered returning to the MLB but instead chose to stay in Japan; signing with the Yokohama Bay Stars in December of 2014.
Split into simpler sentences: Following the season Okajima returned to Japan, signing a one-year contract with the Fukuoka SoftBank Hawks. After the 2014 season Okajima considered returning to the MLB but instead chose to stay in Japan, signing with the Yokohama Bay Stars in December of 2014.