The 18-year-old prodigy had a face-to-face chat with the Stadium of Light chief after a fee was agreed with Ipswich and is convinced he's joined a club which has a cast-iron plan for moving onwards and upwards.
"It's really exciting for me," Wickham told SAFC TV. "I've seen the set-up here, which is amazing, and I can't wait to get started playing football.
"Once the fee was agreed and I met with the manager, he told me all about the club's ambitions and I was sold.
"Everything's done and dusted so I'm looking forward to getting going."
Wickham added: "I'm confident in myself and my ability. I know what I can do and am capable of.
"I know I am coming to a big club and hopefully I can continue doing what I have been at Ipswich.
"The last couple of years have been enjoyable for me.
"To break into the team at Ipswich, do what I did and get recognized so young was good for me.
"I just got my head and down and played my football rather than letting myself get distracted by anything off the pitch."