It would outlaw recent transfers such as that of Aaron Ramsey, 17, to Arsenal from Cardiff and John Bostock, 16, from Crystal Palace to Spurs, plus cases like Theo Walcott's move from Southampton to Arsenal.
The England duo are the most physically contrasting frontline pair in the top flight since Redknapp combined Crouch and Kevin Phillips 5ft 7in, just like Defoe at Southampton in 2004.
Now Strachan may go for Berra as he is anxious to get players in before the Hoops start pre-season at Southampton on Friday.
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