headcanon: clint is hard of hearing.
prior to joining the avengers and affiliating himself with the individual members of the team he did not wear any sort of hearing aids or implants. he was not born this way ---rather much of his hearing loss was sustained in his childhood from his abusive father, where clint lost up to 60% of his hearing in one ear and 40% in the other. as a result he learned american sign language (asl) and was taught how to read lips. he can read lips in english and spanish (as they are his two most fluent languages, and most commonly used),
he can, and does, respond verbally, though he communicates with asl whenever his hands are free to do so, if his conversational partner also speaks it.
after a period of time with the avengers, clint uses hearing aids created by tony stark. his hearing is almost completely restored with their use.
depending on the verse, clint may or may not have these aids when interacting with your character. this largely will not and should not affect interactions, and the topic of his hearing loss is not something he broaches with most individuals. in short, most people will not know that he has sustained any damage unless he chooses to communicate it to them. however it is still prevalent to his character.