Although Guy Ritchie's divorce from Madonna seems to be going smoothly, the director's father confesses that Guy has concerns regarding custody.
"The children are with Madonna at the moment," John Ritchie told the UK's Closer. "Our worry is that she won't send them back and Guy hopes she won't keep them."
The children -- 8 year-old Rocco and 3 year-old David -- are currently with their mother on her concert tour of South America.
Despite the elder Ritchie's worries, his son and Madonna signed a shared custody agreement last month. There is no reason to believe either party won't honor the agreement.