"having looked at my options, I am happy with the going rate for this role; what is more important to me however is the opportunity to progress. I see the role is offering £xxk and I am comfortable with that, but I am ambitious and would like to understand the career development strategy etc etc..."You can hang out for the £70k but net net, if your on the bench for three months you might as well have taken the 60k, been drawing an income, building your value, looking for alternatives.If you are as good as you think you are (and your story seems pretty robust to me) then an employer worth their salt will see that and reward that fairly quickly.