Is Childish Gambino's Redbone a Remake of Another Song or Has he Used Samples in the Song?

I placed a bet with a friend of mine who is certain that Childish Gambino's 'Redbone' is either a remake of an older song or has used samples from other songs and has to pay royalties. I have shown the below evidence to said friend yet he still believes that he has won this bet despite having shown zero evidence to prove this 'truth'.

• [WhoSampled.com showing that 'Redbone' does not contain samples from other songs but has been sampled in other songs] (http://www.whosampled.com/Childish-Gambino/Redbone/)

• [Childish Gambino singing 'Redbone' Live] (https://www.youtube.com/watch?v=ezbsbkqoRrs)

I think that my friend is confused and is probably thinking that Childish Gambino has sampled Bootsy Collins' 'I'd Rather Be With You' but apart from the songs being somewhat similar and there possibly being some musical influence, they are two completely different songs.

Can I please ask that Childish Gambino fans comment here and help my friend to understand that he has lost this bet...?

Edit: Formatting/Spelling.