I would add that 'Next,' when discussing a week day is tricky even for English speakers. It can cause confusion. If we will see the person on the Monday literally following the spoken sentence, the sentence would likely be "See you Monday." If you throw next in, the person listening may not know if you will be coming Monday, unless it has been discussed you will not be seeing each other till the following Monday. Confused? Good. "I will see you next Monday" is often followed by: "Will I see you Monday- or anytime next week- or not?"
Next is loaded with confusion- because in this situation, next means 'the one following the next.' The first next is silent!