There were not many deals on deadline day to get excited about, but in Europe the switch made by Diego back to Atletico Madrid could just be a stroke of genius.
The Brazilian had been angling for a move away from Wolfsburg for months, linked with a switch to Arsenal back in the Autumn.
He got his wish with a last minute loan deal to Atletico Madrid, a team he spent time on loan with three seasons ago, helping them win the Europa League.
Already it is off to a dream start. He came on with half an hour to go with Atletico 1-0 up over Sociedad, and helped them pile on their dominance securing a 4-0 victory.
Diego would score the fourth, netting in the 86th minute with his second shot of the game, helping them to the top of the La Liga table for the first time in 18 years.
He earned particular praise from manager Diego Simeone: "He showed today, both with his experience and intelligence, as well as his hunger, why we wanted him here."
There may be a side in North London in Arsenal who are struggling with their own loanee Kim Kallstrom, but Atletico's acquisition of Diego is off to the perfect start.