Serie A leaders Inter Milan failed to make the most of several Roma gifts as they were held to a 0-0 draw at San Siro on Friday to move a provisional two points clear of Juventus.
The result put Inter on 38 points but gave champions Juve the chance to regain top spot if they win at third-placed Lazio on Saturday. Roma are fourth with 29 points.
Before Friday's match, Inter had scored at least one goal in each of their 19 matches since Antonio Conte replaced Luciano Spalletti as coach.
In the run-up to the January transfer window, we're ranking some of the best and worst signings by Europe's elite clubs over the past decade -- just as we did for the English Premier League.
We looked at every arrival from the 2009-10 season onward -- though only permanent deals count, meaning no loans or promotions from the youth team -- and whittled down each list to five.
There's no magic formula...