Since those words, Manchester United's ranks have been bolstered by the return of Mason Mount and Rasmus Hojlund.
Both Reds featured in Wednesday's 1-1 draw with FC Twente, our opening fixture of the Europa League, giving Erik further food for thought when he comes to name his starting XI for the visit of Tottenham Hotspur on Sunday (16:30 BST).
After the frustrating result against Twente, the boss discussed his attacking options now that our no.9 is nearing full fitness.
"Of course, they [the forwards] are all main [forwards], but Joshua [Zirkzee] is doing very good," he said.