It is often the case in each passing transfer window that one deal has a domino effect which sparks many more.
As one player heads for the exits, the sellers look elsewhere for cover and the buyers prepare to move others out to free up squad space and funds.
This process tends to inflate transfer fees, with managers suddenly having to dig a little deeper to get the additions they need.
In 2015, Paul Pogba could be the man to bring the market screaming to life.
The France international midfielder is on the books at Juventus, where he is committed to a long-term contract, but talk of interest from big-spending Chelsea, Manchester City, Real Madrid and Paris St Germain refuses to go away.
The Italian media, led by Gazzetta dello Sport, are now suggesting that a sale could be sanctioned at the end of the season, with Juve ready to cash-in and reinvest elsewhere.
Pogba would bring in a sizeable fee, freeing the reigning Serie A champions to bolster their ranks with two or three other deals.
Among those they are said to have their eye on is Chelsea midfielder Ramires, with the Brazil international a model of consistency in the Premier League.
Radamel Falcao is reported to be another top target for the Bianconeri, with Manchester United yet to agree a permanent deal for a striker who arrived on a season-long loan from Monaco early in the 2014/15 campaign.
The Red Devils are believed to be piecing a lucrative package together, and Chelsea would be reluctant to part with their Samba star, but money talks and it could be a busy summer in England and Italy.