Let's create a professional soccer team in Nagasaki!
Literal
Nagasaki [to-に] pro soccer team [object-を] let's-make!
プロサッカーチーム uses three loans in a row. つくりましょう is the polite volitional of 作る ('let's make'). に marks Nagasaki as the location. A simple, enthusiastic civic proposal. The sentence demonstrates how Japanese sports vocabulary is heavily loan-based.