Right-back Harrison Afful is irreplaceable at Columbus Crew ahead of the new MLS season, according to expert Bobby Warshaw.
The Ghana international is preparing for his fifth season with the Blood and Gold when the season gets underway in March.
Ex-footballer Warshaw, an analyst at MSLsoccer.com, wrote: ''A Caleb Porter team, at its best, uses the outside backs as the key variable to unbalance a defense.
''Afful plays the marauding fullback role better than anyone else in MLS. (I’d listen to shouts for Pipa Higuain here, but the hill has to start moving downward at some point, right?).''
Full list for MLS clubs:
Atlanta United- Michael Parkhurst
Chicago Fire- Dax McCarty
FC Cincinnati- Fanendo Adi
Colorado Rapids- Benny Feilhaber
FC Dallas- Matt Hedges
D.C. United- Wayne Rooney
Houston Dynamo-Juan David Cabezas
LAFC- Walker Zimmerman
LA Galaxy- Zlatan Ibrahimovic
Minnesota United FC- Ozzie Alonso
Montreal Impact- Nacho Piatti
New England Revolution- Michael Mancienne
New York City FC- Alex Ring
New York Red Bulls-Bradley Wright-Phillips
Orlando City SC-Dom Dwyer
Philadelphia Union-Alejandro Bedoya
Portland Timbers-Diego Chara
Seattle Sounders-Nico Lodeiro
Sporting Kansas City-Johnny Russell
Toronto FC-Jozy Altidore