Michael Jackson's close pal wants to take a DNA test because he believes he is the biological father of the late King of Pop's two eldest children.Former child actor Mark Lester claims he was asked to donate sperm by the 'Thriller' star approximately one year before his first son Prince Michael, 16, was born, followed by his daughter Paris, 15.The 54-year-old father-of-four told the Sunday People newspaper: "After Michael asked me to donate sperm for him I completely forgot about it."He was a great dad to them, brought them up and was brilliant with the kids so I just didn't go there but there is obviously a good possibility (that I could be the biological father)."I wouldn't have a DNA test without the children's permission but when the children come of age, and it's not far away, and they decide they want me to do it then I will. It is up to them."I don't want to tell them what to do. I just want to reconnect and be the godfather that Michael made me."Mark, who was friends with Michael for 30 years, claims he has not been allowed to contact the children since the late singer's memorial service in 2009 but wants them to visit him and his family.He said: "I'm here, come and visit England, we'll look after you."Katherine Jackson, who is the legal guardian of Prince Michael, Paris, and their 11-year-old brother Blanket, recently demanded that paternity evidence relating to her grandchildren be dropped from the family's $40 billion wrongful death lawsuit against AEG Live as she argued that the jury did not need to know anything about their biological parentage.Meanwhile, Paris was spotted with her biological mother Debbie Rowe at her horse stables in Palmdale, California on Saturday (04.05.13).The pair are said to have been hanging out "a lot recently" and have gotten very close.Debbie reached a settlement in August 2009 with Michael's mother which allowed her rights to supervised visitations.