Simplify the following text for a Grade 7 native English-speaking person.
Original: In 1986 , Butcher left Ipswich when they were relegated , and became one of the first ` English invasion ' players to join Scottish club Rangers following the appointment of Graeme Souness as manager .
Simplified: In 1986 , Butcher left Ipswich when they were relegated . He became one of the first ` English invasion ' players to join Scottish club Rangers .