Native English teacher in metro Sierra de Guadalupe

We are looking for a teacher to give private classes to a boy in 3rd of primary. The boy attends a bilingual school and is used to being with au pairs so his English is quite good but he needs help revising his school work and touching up his grammar and conversation skills. The class will be on Tuesdays from 18:30-19:30 close to metro stop Sierra de Guadalupe line 1. If interested, please get in touch ASAP