Who should be my keeper?

I can pick 1 player to keep from my team last year, here are my best options. Rob Gronkowski, Odell Beckham jr. Or I’m even considering Adam Thielen and Juju Smith-Schuster because I really like those guys. but obviously it’s between Gronk and OBJ.

OBJ fo sho

Yeah, obj gets my vote

Is there a keeper penalty / cost? If they are all the same cost, than its OBJ by a country mile.

Odell Beckham Jr. - And he missed 4 games in 2014 ~ No Brainer

Career stats

Year Team REC YDS AVG LNG TD ATT YDS AVG
2017

Giants|25|302|12.1|48|3|1|8|8.0|
||
|2016|

Giants|101|1,367|13.5|75|10|1|9|9.0|
||
|2015|

Giants|96|1,450|15.1|87|13|1|3|3.0|
||
|2014|

Giants|91|1,305|14.3|80|12|7|35|5.0|
||
|Career||313|4,424|14.1|87|38|10|55|5.5|