Delay Graduation to Redo Internship

Interned at MM firm but due to headcount and over hiring did not receive a return offer. I have good connections at the firm though and I am confident that I could go back as an SA again next summer if I wanted. My thinking is that if I were to go back there shouldn't be a reason they don't pick me up for FT after another stint with the group. Looking for advice on the topic as well and general recruiting advice is also appreciated!