The idea appears to be the saving of £3m, with West Brom reportedly holding out for £25m for Berahino, according to the Daily Mail, and Son available for less.
And Bundesliga expert Jan Aage Fjortoft is a fan of the reported Spurs target. Indeed, the former striker and current journalist feels Son is a good player.
SportBild reporting that Leverkusen-player Son goes to Tottenham. Good player— Jan Aage Fjortoft (@JanAageFjortoft) August 26, 2015
However, Fjortoft has also fired a warning to Tottenham that the quoted price is a lot of money to pay for the 23-year-old.
The journalist took to Twitter with a simple message for the north London side as Deadline Day approaches.
22 mill pounds for Son is a lot of money Tottenham.... #THFC— Jan Aage Fjortoft (@JanAageFjortoft) August 26, 2015
With Spurs failing to pick up a win in their first three Premier League games and the need for a new forward and winger - as well as central midfielder - looking abundantly clear, many fear chairman Daniel Levy has simply left things too late in the transfer window.
Looking at Tottenham's reported pursuit of Berahino certainly gives that impression. But the links with a new forward in Son are at least encouraging in that the White Hart Lane outfit seem to have other options.