McCartney's two months in Scotland created an estrangement between him and his bandmates, further to the division caused by their appointment of Allen Klein as business manager in May that year. McCartney later cited Klein's appointment as the first "irreconcilable difference" within the Beatles, since he continued to favour New York lawyers Lee Eastman and John Eastman – father and brother, respectively, of his wife Linda. For McCartney, the period following Lennon's departure was also marked by a bout of severe depression, during which, in his own estimation, he came close to suffering a nervous breakdown.