Rodgers had Suarez, and even Sturridge to thank for that season. They were not a great team. Two great players in form carried them, and supported by a good Coutinho and Sterling. They do not have players of that great quality now, and rely on the team. Rodgers obviously a talented guy, but winning in Scotland is meh. Going unbeaten is a nice achievement, but meaningless really. Only real goal for Celtic is to get the record for most league titles. They have a ceiling. I would really like to see them in England. At this moment would maybe be upper midtable, but given time, could for sure challenge for top four.
I would not be surprised to see a Spanish or German team come for Rodgers. Valencia could do much worse.
Seems very happy at Celtic though.