Of course, he should have no intentions of remaining beyond the leave granted to his wife. The ECO may grant leave in-line with his wife. But this doesn't imply that he must leave the UK when his wife's current leave expires, as his wife has the option of applying for further/indefinite leave to remain. Consequently, he will also have the option of applying for further/indefinite leave to remain, in-line with his wife. Therefore, it would be wrong for the ECO to expect him to leave the UK when his wife's current leave expires.
He and his wife should also show that they will be able to maintain themselves and any dependants
adequately without recourse to public funds. His wife's employer may help with this.
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