Salisu completed his move to St Mary's yesterday.
He has been aware of the online clamour among fans for his arrival, and he has been touched by the response the Southampton fans had to rumours of his potential move to the club.
“I saw it and I am very happy they are welcoming me so warmly and that they are happy with me," he said. “I am going to try my best to put happiness on their faces."
Salisu added: “I must thank my family for supporting me and believing in me, as well as my team from Ghana where I started, I want to thank them because they really helped me. The African Talent Football Academy too, because without them I would not have reached where I am today. They helped me and they brought me to Europe.
“I also want to thank Real Valladolid – they really helped me a lot and they always motivated me and I am very grateful for them and I really appreciate. Also my agent, I want to give thanks to him, because without him I would not be here."