Liverpool midfielder Alex Oxlade-Chamberlain's move from Southampton to Arsenal was negotiated by the minute, it has been revealed.

Alan Gernon explained a clause in Oxlade-Chamberlain's Reds deal in his book, The Transfer Market: The Inside Stories.

"Following Alex Oxlade-Chamberlain's move to Arsenal in 2011, Gunners fans became increasingly frustrated with the midfielder's lack of playing time," reads a section.

"He was predominantly used as a substitute, often around the 71-minute mark.

"After his contract details emerged, it all became clear: Arsenal were obliged to pay Southampton £10,000 every time he played 20 minutes or more."