The Steelers placed the franchise tag on him for the second consecutive year and so worse case scenario they will have him for another year. This year the cap number is around 14.5 million, but that is still less than their best offer last year.
Le’Veon Bell has said that he would hold out or retire if the Steelers placed the franchise tag on him. This would yield him not making any money in the prime of his career money-wise and so you have to take that with a grain of salt.
What is more likely is that he will hold out all of training camp and maybe some the regular season.