It is believed that the 'Transformers' star - who filed for divorce from the 42-year-old actor on Friday (21.08.15) - will have to give her husband financial support because of the gap between their incomes.

He has been unable to work because of the vertigo, which affects his balance, that he sustained as a result of the car crash he and Megan were involved in December, according to gossip website TMZ.

Meanwhile, a source previously claimed that the 29-year-old beauty - who has sons Noah, two, and Bodhi, 18 months, with Brian - felt ''overwhelmed'' by her husband's expectations of her.

They said: ''Megan and Brian's split is a classic Hollywood story of two people in different stages of life and career.

''Megan is young and hot and sought after for work, and she is eager to move ahead in her career. Brian wants more of her time than she can allow.

''She was overwhelmed with the children and her husband's expectations, which got in the way of work responsibilities. They had many disagreements and arguments about her time at home, which led to problems.''