Always best to learn from previous mistakes.
Scrutiny by doctors is no mere formality for Rangers. The case of Daniel Prodan, the Romanian defender, who has never kicked a ball since he arrived at Ibrox two years ago is a cautionary tale so de Boer was subjected to a 2.5-hour test. The same lies in store for Hartson, who was close to signing for Tottenham in March until he failed a medical.