The League One side occupy the fourth and final playoff spot at the moment but it would appear as if manager Karl Robinson is keen to bolster his striking options.
And one man who perhaps won't be happy if the Addicks wind up signing the 31-year-old hitman is on-loan Rangers man Joe Dodoo.
The 22-year-old left Rangers for the Addicks in search of first-team football but Dodoo is yet to start a League One game under Robinson - and has been an unused substitute in Charlton's last two games.
And the former Leicester City man could and should be worried about his first-team prospects growing more unlikely if Best impresses on his trial and ends up being signed.
He is just another obstacle between him and regular games.
The Rangers loanee scored on his debut for the English side but he hasn't had a sniff since then and you wonder whether he could return to Ibrox a lot sooner than expected.