Seeing that the former saved him and the latter would just feel indebted, could there be a possible friendship between Nick and Sean in Grimm season 6? Reports indicated that although the finale episode did send off mixed signals, it may not be necessarily the case.
Because according to reports, Renard inadvertently saved his life because of Diana (Hannah R. Loyd) - his daughter. It was Diana who influenced him with a doll. By using her suparnatural abilities on him, she proxied herself