I met many internationals in bschool with heavy foreign accents. Hell, if you read some of the essays that US applicants write to bschools every year, you are going to wonder "Where did these kids learn to write? Were they really born here?"
That being said, I am not sure where you are applying but a small detail such as "my manager is going to write that my weakness is my english communication skills, etc" should not be a huge factor or reason for you to not apply to bschools (or switch recommender).
V42 on GMAT is better than most US applicants who take the exam every year. And if you are invited to the interview, I am sure the interviewer will assess and judge whether your english accent or communication skill is going to prevent your potential success in the program, etc.
But if it's the way you speak the language...trust me, there are internationals in bschools with similar issues.
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