The Chicago Cubs could be one of the more intriguing teams to follow at the trade deadline. What could their approach be at the deadline?

Pitching remains Chicago’s top priority at the trade deadline, according to league sources briefed on the club’s wide-ranging search, which includes everyone from rental players, such as Arizona Diamondbacks starters Zac Gallen and Merrill Kelly, to potential closers to All-Star performers under club control who are viewed as unlikely to be moved.

Here is what the Cubs are "desperate" for at the July 31 trade deadline, though there is a catch to the notion.