The correct sentence should be:
"Looking forward to having a great association."
The error lies in the use of the infinitive "to have." The correct preposition to use with "looking forward to" is the gerund, which is the -ing form of a verb, in this case, "having."
Here's why:
* Looking forward to implies anticipation and expectation of something in the future.
* Having is the gerund form of the verb "to have" and indicates the action of having a great association.
So, the corrected sentence emphasizes the anticipation of having a great association.