Complex sentence: He was loaned from Deportivo to Rennes in January of 1997 where for the remain of that season he continued to net goals before he moved in the summer of 1997 back to France with Bordeaux.
Split into simpler sentences: He was loaned from Deportivo to Rennes in January of 1997 where for that season he continued to net goals. At the end of his spell on loan he returned to Spain only to move in the summer of 1997 back to France so as to link up with Bordeaux.