Won't graduate from MSF on time, would FT IB Offer be Rescinded after background check

Hello guys the title says it all, I cannot graduate on time due to a lot of reasons I can't get into now and its pretty much certain now.

My bank has hired a lot of analysts with a few years work experience in the past that also start in summer before so I am hoping to just blend in with them they do have a start date that differs by about a month though. However, I am officially losing sleep over this issue. I have the right degree and grades from undergrad but took this MSF program to enable me to be competitive again. 

I interned last summer and had among the best feedback for interns that year so I am hoping if it does come to light a senior banker would speak up for me but nothing is certain and to be fair that is simply wishful thinking as they most likely have forgotten about me already. 

Would this show in my background check? My offer letter ONLY states a bachelors as a prerequisite but I am still very scared, if this offer is rescinded I am pretty sure my career is over and I don't want pity points so I wouldn't go into all that.

What do you guys think of all this, would my bank care or will it be picked up in my background check?       :(